diff --git a/pyproject.toml b/pyproject.toml
index ce2bf17..d1dc62e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,13 +1,11 @@
 [tool.poetry]
 name = "web-sand"
-version = "2.1.15"
+version = "2.1.16"
 description = "UI for browsing/editing semantic descriptions"
 authors = ["Binh Vu <binh@toan2.com>"]
 repository = "https://github.com/usc-isi-i2/sand"
 license = "MIT"
-packages = [
-    { include = "sand" }
-]
+packages = [{ include = "sand" }]
 readme = "README.md"
 include = ["sand/www/**/*"]
 
@@ -17,8 +15,8 @@ sand = 'sand.__main__:cli'
 [tool.poetry.dependencies]
 # restricting the upper bound python version to 3.12, due to RestrictedPython dependency.
 python = ">=3.8,<3.12"
-kgdata = "^3.8.0"
-sem-desc = "^4.4.2"
+kgdata = "^5.3.1"
+sem-desc = "^5.1.0"
 peewee = "^3.15.2"
 Flask = "^2.2.2"
 python-dotenv = ">= 0.19.0, < 0.20.0"
diff --git a/sand/config.bk b/sand/config.bk
new file mode 100644
index 0000000..09301c1
--- /dev/null
+++ b/sand/config.bk
@@ -0,0 +1,75 @@
+import os
+from pathlib import Path
+
+_ROOT_DIR = Path(os.path.abspath(__file__)).parent.parent
+PACKAGE_DIR = str(Path(os.path.abspath(__file__)).parent)
+FROM_SITEPACKAGES = _ROOT_DIR.name == "site-packages"
+
+CACHE_SIZE = 10240
+
+SETTINGS = {
+    "entity": {
+        "constructor": "sand.extensions.wikidata.get_entity_db",
+        "uri2id": "sand.extensions.wikidata.uri2id",
+        "id2uri": "sand.extensions.wikidata.id2uri",
+        "args": {
+            "dbfile": "/tmp/entities.db",
+            "proxy": True,
+        },
+        # extra entities
+        "default": "sand.models.entity.DEFAULT_ENTITY",
+        # mapping from entity's namespace to the property id that will be used to indicate `instance_of` relationship
+        "instanceof": {
+            "http://www.wikidata.org": "P31",
+        },
+        # id of an nil entity
+        "nil": {"id": "drepr:nil", "uri": "https://purl.org/drepr/ontology/1.0/nil"},
+        # template for new entity uri
+        "new_entity_template": "http://www.wikidata.org/entity/{id}",
+    },
+    "ont_classes": {
+        "constructor": "sand.extensions.wikidata.get_ontclass_db",
+        "uri2id": "sand.extensions.wikidata.uri2id",
+        "id2uri": "sand.extensions.wikidata.id2uri",
+        "args": {
+            "dbfile": "/tmp/classes.db",
+            "proxy": True,
+        },
+        # extra classes
+        "default": "sand.extensions.wikidata.WD_ONT_CLASSES",
+    },
+    "ont_props": {
+        "constructor": "sand.extensions.wikidata.get_ontprop_db",
+        "uri2id": "sand.extensions.wikidata.uri2id",
+        "id2uri": "sand.extensions.wikidata.id2uri",
+        "args": {
+            "dbfile": "/tmp/props.db",
+            "proxy": True,
+        },
+        # extra props
+        "default": "sand.models.ontology.DEFAULT_ONT_PROPS",
+    },
+    "semantic_model": {
+        # list of properties' uris that when a column is tagged with one of them, the column is an entity column
+        "identifiers": [
+            "http://www.w3.org/2000/01/rdf-schema#label",
+        ],
+        # list of uri of classes that are used as intermediate nodes to represent n-ary relationships, e.g., wikidata's statement
+        "statements": ["http://wikiba.se/ontology#Statement"],
+    },
+    "assistants": {
+        # list of assistants' names and their models
+        # "grams": "sand.extensions.grams.GRAMSAssistant",
+        "mtab": "sand.extensions.assistants.mtab.MTabAssistant",
+        # "default": "mtab",
+    },
+    "search": {
+        "entities": "sand.extensions.search.wikidata_search.extended_wikidata_search",
+        "classes": "sand.extensions.search.wikidata_search.extended_wikidata_search",
+        "props": "sand.extensions.search.wikidata_search.extended_wikidata_search",
+    },
+    "exports": {
+        "drepr": "sand.extensions.export.drepr.main.DreprExport",
+        "default": "sand.extensions.export.drepr.main.DreprExport",
+    },
+}
diff --git a/sand/config.py b/sand/config.py
index 5192c34..442872a 100644
--- a/sand/config.py
+++ b/sand/config.py
@@ -1,6 +1,9 @@
 import os
 from pathlib import Path
 
+from minmod.db import MNDR_NS, MNDRNamespace
+from rdflib import RDF
+
 _ROOT_DIR = Path(os.path.abspath(__file__)).parent.parent
 PACKAGE_DIR = str(Path(os.path.abspath(__file__)).parent)
 FROM_SITEPACKAGES = _ROOT_DIR.name == "site-packages"
@@ -9,42 +12,37 @@
 
 SETTINGS = {
     "entity": {
-        "constructor": "sand.extensions.wikidata.get_entity_db",
-        "uri2id": "sand.extensions.wikidata.uri2id",
-        "id2uri": "sand.extensions.wikidata.id2uri",
+        "constructor": "minmod.sand.get_entity_db",
+        "uri2id": "minmod.sand.WrappedEntity.uri2id",
+        "id2uri": "minmod.sand.WrappedEntity.id2uri",
         "args": {
-            "dbfile": "/tmp/wdentities.db",
-            "proxy": True,
+            "dbfile": "/Volumes/research/gramsplus/libraries/minmod/data/databases/entities.db",
         },
         # extra entities
         "default": "sand.models.entity.DEFAULT_ENTITY",
         # mapping from entity's namespace to the property id that will be used to indicate `instance_of` relationship
-        "instanceof": {
-            "http://www.wikidata.org": "P31",
-        },
+        "instanceof": {MNDR_NS: MNDRNamespace.create().get_rel_uri(str(RDF.type))},
         # id of an nil entity
         "nil": {"id": "drepr:nil", "uri": "https://purl.org/drepr/ontology/1.0/nil"},
         # template for new entity uri
         "new_entity_template": "http://www.wikidata.org/entity/{id}",
     },
     "ont_classes": {
-        "constructor": "sand.extensions.wikidata.get_ontclass_db",
-        "uri2id": "sand.extensions.wikidata.uri2id",
-        "id2uri": "sand.extensions.wikidata.id2uri",
+        "constructor": "minmod.sand.get_ontclass_db",
+        "uri2id": "minmod.sand.WrappedOntClass.uri2id",
+        "id2uri": "minmod.sand.WrappedOntClass.id2uri",
         "args": {
-            "dbfile": "/tmp/wdclasses.db",
-            "proxy": True,
+            "dbfile": "/Volumes/research/gramsplus/libraries/minmod/data/databases/classes.db",
         },
         # extra classes
-        "default": "sand.extensions.wikidata.WD_ONT_CLASSES",
+        "default": "sand.models.ontology.DEFAULT_ONT_CLASSES",
     },
     "ont_props": {
-        "constructor": "sand.extensions.wikidata.get_ontprop_db",
-        "uri2id": "sand.extensions.wikidata.uri2id",
-        "id2uri": "sand.extensions.wikidata.id2uri",
+        "constructor": "minmod.sand.get_ontprop_db",
+        "uri2id": "minmod.sand.WrappedOntClass.uri2id",
+        "id2uri": "minmod.sand.WrappedOntClass.id2uri",
         "args": {
-            "dbfile": "/tmp/wdprops.db",
-            "proxy": True,
+            "dbfile": "/Volumes/research/gramsplus/libraries/minmod/data/databases/props.db",
         },
         # extra props
         "default": "sand.models.ontology.DEFAULT_ONT_PROPS",
@@ -60,13 +58,14 @@
     "assistants": {
         # list of assistants' names and their models
         # "grams": "sand.extensions.grams.GRAMSAssistant",
-        "mtab": "sand.extensions.assistants.mtab.MTabAssistant",
+        # "mtab": "sand.extensions.assistants.mtab.MTabAssistant",
+        "mtab": "minmod.sand.GramsMinModAssistant",
         # "default": "mtab",
     },
     "search": {
-        "entities": "sand.extensions.search.wikidata_search.extended_wikidata_search",
-        "classes": "sand.extensions.search.wikidata_search.extended_wikidata_search",
-        "props": "sand.extensions.search.wikidata_search.extended_wikidata_search",
+        "entities": "minmod.sand.mndr_search",
+        "classes": "minmod.sand.mndr_search",
+        "props": "minmod.sand.mndr_search",
     },
     "exports": {
         "drepr": "sand.extensions.export.drepr.main.DreprExport",
diff --git a/sand/deserializer.py b/sand/deserializer.py
index 178f029..13b74e3 100644
--- a/sand/deserializer.py
+++ b/sand/deserializer.py
@@ -1,7 +1,9 @@
-from gena.deserializer import get_dataclass_deserializer
 import sm.outputs.semantic_model as O
+from gena.deserializer import get_dataclass_deserializer
+
+# from sand.extensions.wikidata import get_rel_uri
+from minmod.sand import get_rel_uri
 from sm.outputs.semantic_model import LiteralNodeDataType
-from sand.extensions.wikidata import get_rel_uri
 
 
 def deserialize_graph(value) -> O.SemanticModel:
diff --git a/sand/extensions/assistants/mtab.py b/sand/extensions/assistants/mtab.py
index b7ce6dd..1a3c4bb 100644
--- a/sand/extensions/assistants/mtab.py
+++ b/sand/extensions/assistants/mtab.py
@@ -1,15 +1,15 @@
 import copy
-from rdflib import RDFS
 import subprocess
 from pathlib import Path
 from typing import Dict, List, Tuple
+
 import serde.prelude as serde
-from sm.namespaces.wikidata import WikidataNamespace
 import sm.outputs.semantic_model as O
+from rdflib import RDFS
 from sand.controllers.assistant import IAssistant
 from sand.models.base import init_db
-
 from sand.models.table import CandidateEntity, Link, Table, TableRow
+from sm.namespaces.wikidata import WikidataNamespace
 
 
 class MTabAssistant(IAssistant):
@@ -142,15 +142,15 @@ def create_sm_from_cta_cpa(
             # somehow, they may end-up predict multiple classes, we need to select one
             if qnode_id.find(" ") != -1:
                 qnode_id = qnode_id.split(" ")[0]
-            curl = self.wdns.get_entity_abs_uri(qnode_id)
+            curl = self.wdns.id_to_uri(qnode_id)
 
             try:
                 cnode_label = f"{self.id2label[qnode_id]} ({qnode_id})"
             except KeyError:
-                cnode_label = self.wdns.get_entity_rel_uri(qnode_id)
+                cnode_label = self.wdns.get_rel_uri(self.wdns.id_to_uri(qnode_id))
             cnode = O.ClassNode(
                 abs_uri=curl,
-                rel_uri=self.wdns.get_entity_rel_uri(qnode_id),
+                rel_uri=self.wdns.get_rel_uri(self.wdns.id_to_uri(qnode_id)),
                 readable_label=cnode_label,
             )
             sm.add_node(dnode)
@@ -196,8 +196,8 @@ def create_sm_from_cta_cpa(
                 O.Edge(
                     source=source.id,
                     target=target.id,
-                    abs_uri=self.wdns.get_prop_abs_uri(prop),
-                    rel_uri=self.wdns.get_prop_rel_uri(prop),
+                    abs_uri=(tmp_abs_uri := self.wdns.id_to_uri(prop)),
+                    rel_uri=self.wdns.get_rel_uri(tmp_abs_uri),
                     readable_label=f"{self.id2label[prop]} ({prop})",
                 )
             )
diff --git a/sand/extensions/export/drepr/semanticmodel.py b/sand/extensions/export/drepr/semanticmodel.py
index 3aeba90..a76cbe8 100644
--- a/sand/extensions/export/drepr/semanticmodel.py
+++ b/sand/extensions/export/drepr/semanticmodel.py
@@ -7,12 +7,11 @@
 import orjson
 import sm.misc as M
 import sm.outputs.semantic_model as O
-from sm.namespaces.wikidata import WikidataNamespace
-
 from sand.config import SETTINGS
 from sand.models.entity import NIL_ENTITY_ID, Entity
 from sand.models.ontology import OntProperty, OntPropertyAR, OntPropertyDataType
 from sand.models.table import Table, TableRow
+from sm.namespaces.wikidata import WikidataNamespace
 
 prefixes = WikidataNamespace.create().prefix2ns.copy()
 prefixes.update(drepr_sm.SemanticModel.get_default_prefixes())
@@ -94,6 +93,8 @@ def get_drepr_sm(
             label=edge.rel_uri,
         )
 
+    print(edges)
+
     # add drepr:uri relationship
     for node in get_entity_data_nodes(sm):
         new_node_id = str(node.id) + ":ents"
diff --git a/sand/extensions/wikidata.py b/sand/extensions/wikidata.py
index afdbc6f..912dbb7 100644
--- a/sand/extensions/wikidata.py
+++ b/sand/extensions/wikidata.py
@@ -5,8 +5,6 @@
 from hugedict.misc import identity
 from kgdata.wikidata import db
 from kgdata.wikidata.models import WDClass, WDEntity, WDProperty, WDValue
-from sm.namespaces.wikidata import WikidataNamespace
-
 from sand.models.base import StoreWrapper
 from sand.models.entity import DEFAULT_ENTITY, Entity, Statement, Value
 from sand.models.ontology import (
@@ -16,13 +14,14 @@
     OntProperty,
     OntPropertyDataType,
 )
+from sm.namespaces.wikidata import WikidataNamespace
 
 wdns = WikidataNamespace.create()
 WD_ONT_CLASSES = {
-    wdns.get_rel_uri(wdns.STATEMENT_URI): OntClass(
-        id=wdns.get_rel_uri(wdns.STATEMENT_URI),
-        uri=wdns.STATEMENT_URI,
-        label=wdns.get_rel_uri(wdns.STATEMENT_URI),
+    wdns.get_rel_uri(wdns.statement_uri): OntClass(
+        id=wdns.get_rel_uri(wdns.statement_uri),
+        uri=wdns.statement_uri,
+        label=wdns.get_rel_uri(wdns.statement_uri),
         aliases=[],
         description="Describes the claim of a statement and list references for this claim",
         parents=[],
@@ -91,7 +90,7 @@ def get_entity_db(dbfile: str, proxy: bool):
 
 def get_ontclass_db(dbfile: str, proxy: bool):
     return StoreWrapper(
-        db.get_wdclass_db(dbfile, proxy=proxy, read_only=not proxy),
+        db.get_class_db(dbfile, proxy=proxy, read_only=not proxy),
         key_deser=get_wdclass_id,
         val_deser=ont_class_deser,
     )
@@ -99,7 +98,7 @@ def get_ontclass_db(dbfile: str, proxy: bool):
 
 def get_ontprop_db(dbfile: str, proxy: bool):
     return StoreWrapper(
-        db.get_wdprop_db(dbfile, proxy=proxy, read_only=not proxy),
+        db.get_prop_db(dbfile, proxy=proxy, read_only=not proxy),
         key_deser=get_wdprop_id,
         val_deser=ont_prop_deser,
     )
@@ -123,7 +122,7 @@ def qnode_deser(qnode: WDEntity):
 
     return WrapperWDEntity(
         id=qnode.id,
-        uri=wdns.get_entity_abs_uri(qnode.id),
+        uri=wdns.id_to_uri(qnode.id),
         label=qnode.label,
         aliases=qnode.aliases,
         description=qnode.description,
@@ -134,7 +133,7 @@ def qnode_deser(qnode: WDEntity):
 def ont_class_deser(item: WDClass):
     return WrapperWDClass(
         id=item.id,
-        uri=WikidataNamespace.get_entity_abs_uri(item.id),
+        uri=WikidataNamespace.id_to_uri(item.id),
         aliases=item.aliases,
         label=item.label,
         description=item.description,
@@ -147,7 +146,7 @@ def ont_prop_deser(item: WDProperty):
     global WD_DATATYPE_MAPPING
     return WrapperWDProperty(
         id=item.id,
-        uri=WikidataNamespace.get_prop_abs_uri(item.id),
+        uri=WikidataNamespace.id_to_uri(item.id),
         aliases=item.aliases,
         label=item.label,
         description=item.description,
@@ -182,9 +181,9 @@ def get_wdclass_id(uri_or_id: str):
 
 def uri2id(uri: str):
     if uri.startswith("http://www.wikidata.org/prop/"):
-        return WikidataNamespace.get_prop_id(uri)
+        return WikidataNamespace.uri_to_id(uri)
     if uri.startswith("http://www.wikidata.org/entity/"):
-        return WikidataNamespace.get_entity_id(uri)
+        return wdns.uri_to_id(uri)
     if uri in INVERSE_DEFAULT_URI2ID:
         return INVERSE_DEFAULT_URI2ID[uri]
     return uri
@@ -194,9 +193,9 @@ def id2uri(id: str):
     if id in DEFAULT_ID2URI:
         return DEFAULT_ID2URI[id]
     if id.startswith("P"):
-        return wdns.get_prop_abs_uri(id)
+        return wdns.id_to_uri(id)
     if id.startswith("Q"):
-        return wdns.get_entity_abs_uri(id)
+        return wdns.id_to_uri(id)
     raise ValueError(f"Cannot convert unknown id to uri: {id}")
 
 
diff --git a/sand/models/base.py b/sand/models/base.py
index 13030ba..a24b86a 100644
--- a/sand/models/base.py
+++ b/sand/models/base.py
@@ -1,12 +1,10 @@
 import functools
 from pathlib import Path
-from typing import Mapping, TypeVar, Callable, Any, Union
-
-from peewee import SqliteDatabase, Model, Field
+from typing import Any, Callable, Mapping, TypeVar, Union
 
+from peewee import Field, Model, SqliteDatabase
 from sand.config import CACHE_SIZE
 
-
 # TODO: consider moving to APSWDatabase
 db = SqliteDatabase(None)
 
@@ -44,7 +42,7 @@ def __init__(self, serialize, deserialize, **kwargs):
 V = TypeVar("V")
 
 
-class StoreWrapper:
+class StoreWrapper(Mapping[K, V]):
     def __init__(
         self,
         store: Mapping[K, V],
@@ -55,12 +53,16 @@ def __init__(
         self.key_deser = key_deser
         self.val_deser = val_deser
 
-    @functools.lru_cache(maxsize=CACHE_SIZE)
+    # @functools.lru_cache(maxsize=CACHE_SIZE)
     def __contains__(self, key):
+        # print(key)
+        # print(self.key_deser(key))
         return self.key_deser(key) in self.store
 
-    @functools.lru_cache(maxsize=CACHE_SIZE)
+    # @functools.lru_cache(maxsize=CACHE_SIZE)
     def __getitem__(self, key):
+        # print(key)
+        # print(self.key_deser(key))
         val = self.store[self.key_deser(key)]
         return self.val_deser(val)
 
@@ -79,6 +81,14 @@ def __len__(self):
             f"{self.__class__.__name__} does not support __len__ function"
         )
 
+    def __iter__(self):
+        raise NotImplementedError(
+            f"{self.__class__.__name__} does not support __iter__ function"
+        )
+
+    def values(self):
+        return (self.val_deser(v) for v in self.store.values())
+
     def get(self, key, default=None):
         if not self.__contains__(key):
             return default
diff --git a/sand/models/entity.py b/sand/models/entity.py
index 38bd05e..057aa06 100644
--- a/sand/models/entity.py
+++ b/sand/models/entity.py
@@ -4,19 +4,15 @@
 from typing import Literal, Mapping, Optional, Union
 
 from hugedict.chained_mapping import ChainedMapping
-from kgdata.wikidata.models.multilingual import (
-    MultiLingualString,
-    MultiLingualStringList,
-)
+from kgdata.models.multilingual import MultiLingualString, MultiLingualStringList
 from kgdata.wikidata.models.wdvalue import (
     ValueGlobeCoordinate,
     ValueMonolingualText,
     ValueQuantity,
     ValueTime,
 )
-from sm.misc.funcs import import_attr, import_func
-
 from sand.config import SETTINGS
+from sm.misc.funcs import import_attr, import_func
 
 # represent that there is no entity
 NIL_ENTITY_ID = SETTINGS["entity"]["nil"]["id"]
diff --git a/sand/models/ontology.py b/sand/models/ontology.py
index 0eb6461..42b0540 100644
--- a/sand/models/ontology.py
+++ b/sand/models/ontology.py
@@ -2,10 +2,9 @@
 from typing import Dict, List, Literal, Mapping, Set
 
 from hugedict.chained_mapping import ChainedMapping
-from rdflib import RDFS
-from sm.misc.funcs import import_attr, import_func
-
+from rdflib import RDF, RDFS
 from sand.config import SETTINGS
+from sm.misc.funcs import import_attr, import_func
 
 
 @dataclass
@@ -16,7 +15,7 @@ class OntClass:
     aliases: List[str]
     description: str
     parents: List[str]
-    ancestors: Set[str] = field(default_factory=set)
+    ancestors: Dict[str, int] = field(default_factory=dict)
 
     @property
     def readable_label(self):
@@ -58,7 +57,7 @@ class OntProperty:
     aliases: List[str]
     description: str
     parents: List[str]
-    ancestors: Set[str] = field(default_factory=set)
+    ancestors: Dict[str, int] = field(default_factory=dict)
 
     @property
     def readable_label(self):
@@ -91,7 +90,16 @@ def id2uri(id: str) -> str:
         datatype="string",
         description="Provides a human-readable version of a resource's name.",
         parents=[],
-    )
+    ),
+    "rdf:type": OntProperty(
+        id="rdf:type",
+        uri=str(RDF.type),
+        label="rdf:type",
+        aliases=[],
+        datatype="entity",
+        description="Is used to state that a resource is an instance of a class",
+        parents=[],
+    ),
 }
 DEFAULT_ONT_CLASSES = {}
 
diff --git a/sand/serializer.py b/sand/serializer.py
index a394c09..94a1ac5 100644
--- a/sand/serializer.py
+++ b/sand/serializer.py
@@ -4,7 +4,6 @@
 
 import sm.outputs.semantic_model as O
 from playhouse.shortcuts import model_to_dict
-
 from sand.models import SemanticModel, Table
 from sand.models.entity import Entity, EntityAR
 from sand.models.ontology import OntClass, OntClassAR, OntProperty, OntPropertyAR
@@ -20,7 +19,7 @@ def serialize_property(prop: OntProperty):
         "description": prop.description,
         "datatype": prop.datatype,
         "parents": prop.parents,
-        "ancestors": list(prop.ancestors),
+        "ancestors": list(prop.ancestors.keys()),
     }
 
 
@@ -33,7 +32,7 @@ def serialize_class(cls: OntClass):
         "aliases": cls.aliases,
         "description": cls.description,
         "parents": cls.parents,
-        "ancestors": list(cls.ancestors),
+        "ancestors": list(cls.ancestors.keys()),
     }
 
 
@@ -130,6 +129,7 @@ def batch_serialize_sms(sms: List[SemanticModel]):
 
     ontprops = OntPropertyAR()
     ontclasses = OntClassAR()
+    # TODO: id != uri fix me
     uri2lbl = partial(get_label, ontprops=ontprops, ontclasses=ontclasses)
 
     output = []
@@ -143,12 +143,20 @@ def batch_serialize_sms(sms: List[SemanticModel]):
     return output
 
 
+from minmod.sand import kgns
+
+
 def get_label(
-    id: str,
+    uri_or_id: str,
     is_class: bool,
     ontprops: Mapping[str, OntProperty],
     ontclasses: Mapping[str, OntClass],
 ) -> Optional[str]:
+    if uri_or_id.startswith("http"):
+        id = kgns.get_rel_uri(uri_or_id)
+    else:
+        id = uri_or_id
+
     if is_class:
         if id in ontclasses:
             return ontclasses[id].readable_label
diff --git a/www/package.json b/www/package.json
index 7581e38..3071f83 100644
--- a/www/package.json
+++ b/www/package.json
@@ -55,6 +55,7 @@
     "start": "BROWSER=none react-scripts start",
     "start_nonroot": "PORT=5527 CHOKIDAR_USEPOLLING=true BROWSER=none DANGEROUSLY_DISABLE_HOST_CHECK=true react-scripts start",
     "build": "python ./scripts/build.py ../sand/www",
+    "build:macos": "NODE_OPTIONS=--openssl-legacy-provider python ./scripts/build.py ../sand/www",
     "test": "react-scripts test",
     "eject": "react-scripts eject",
     "build:lib": "yarn compile && yarn compile:post",