diff --git a/ontologies/combined_mereotopology/cemt.clif b/ontologies/combined_mereotopology/cemt.clif
new file mode 100644
index 000000000..1734cfb82
--- /dev/null
+++ b/ontologies/combined_mereotopology/cemt.clif
@@ -0,0 +1,7 @@
+(cl-text http://colore.oor.net/combined_mereotopology/cemt.clif
+
+(cl-imports http://colore.oor.net/combined_mereotopology/mt.clif)
+
+(cl-imports http://colore.oor.net/mereology/cem_mereology)
+
+)
diff --git a/ontologies/combined_mereotopology/cmt.clif b/ontologies/combined_mereotopology/cmt.clif
new file mode 100644
index 000000000..a8c95dc67
--- /dev/null
+++ b/ontologies/combined_mereotopology/cmt.clif
@@ -0,0 +1,15 @@
+(cl-text http://colore.oor.net/combined_mereotopology/cmt.clif
+
+(cl-imports http://colore.oor.net/combined_mereotopology/mt.clif)
+
+(cl-imports http://colore.oor.net/combined_mereotopology/definitions/mt.clif)
+
+(cl-imports http://colore.oor.net/mereology/definitions/mereology_def.clif)
+
+(cl-imports http://colore.oor.net/mereology/cm_mereology)
+
+(forall (x y)
+	(if	(C x y)
+		(underlaps x y)))
+
+)
diff --git a/ontologies/combined_mereotopology/definitions/mt_def.clif b/ontologies/combined_mereotopology/definitions/mt_def.clif
new file mode 100644
index 000000000..5470a9eb6
--- /dev/null
+++ b/ontologies/combined_mereotopology/definitions/mt_def.clif
@@ -0,0 +1,62 @@
+
+(cl-text  http://colore.oor.net/combined_mereotopology/definitions/mt_def.clif
+
+(cl-imports  http://colore.oor.net/combined_mereotopology/mt.clif)
+
+(cl-imports  http://colore.oor.net/mereology/definitions/mereology_def.clif)
+
+(forall (x y)
+	(iff	(EC x y)
+		(and	(C x y)
+			(not (overlaps x y)))))
+
+(forall (x y)
+	(iff	(IP x y)
+		(and	(part x y)
+			(forall (z)
+				(if	(C z x)
+					(overlaps z y))))))
+
+(forall (x y)
+	(iff	(TP x y)
+		(and	(part x y)
+			(not (IP x y)))))
+
+(forall (x y)
+	(iff	(IO x y)
+		(exists (z)
+			(and	(IP z x)
+				(IP z y)))))
+
+(forall (x y)
+	(iff	(TO x y)
+		(and	(overlaps x y)
+			(not (IO x y)))))
+
+(forall (x y)
+	(iff	(IU x y)
+		(exists (z)
+			(and	(IP x z)
+				(IP y z)))))
+
+(forall (x y)
+	(iff	(TU x y)
+		(and	(underlaps x y)
+			(not (IU x y)))))
+
+(forall (x y)
+	(iff	(IPP x y)
+		(and	(IP x y)
+			(not (IP y x)))))
+
+(forall (x)
+	(iff	(SC x)
+		(forall (y z)
+			(if	(forall (w)
+					(iff	(overlaps w x)
+						(or	(overlaps w y)
+							(overlaps w z))))
+				(C y z)))))
+
+
+)
diff --git a/ontologies/combined_mereotopology/mt.clif b/ontologies/combined_mereotopology/mt.clif
new file mode 100644
index 000000000..70583996c
--- /dev/null
+++ b/ontologies/combined_mereotopology/mt.clif
@@ -0,0 +1,13 @@
+(cl-text http://colore.oor.net/combined_mereotopology/mt.clif
+
+(cl-imports http://colore.oor.net/mereotopology/connection.clif)
+
+(cl-imports http://colore.oor.net/mereology/m_mereology)
+
+(forall (x y)
+	(if	(part x y)
+		(forall (z)
+			(if	(C x z)
+				(C z y)))))
+
+)
diff --git a/ontologies/location_varzi/definitions/location_def.clif b/ontologies/location_varzi/definitions/location_def.clif
index e11d9e223..d3ae1be26 100644
--- a/ontologies/location_varzi/definitions/location_def.clif
+++ b/ontologies/location_varzi/definitions/location_def.clif
@@ -1,5 +1,5 @@
 
-(cl-text  http://colore.oor.net/location_varzi/location_def.clif
+(cl-text  http://colore.oor.net/location_varzi/definitions/location_def.clif
 
 (cl-imports http://colore.oor.net/location_varzi/location_root.clif)