@graph not parsed correctly

[samuraraujo]

RDFLib output a empty graph after parsing this file. is this a known bug ?
{
"@context": {
"@vocab": "http://xmlns.com/foaf/0.1/",
"knows": {"@type": "@id"}
},
"@graph": [{
"name": "Manu Sporny",
"@type": "Person",
"knows": "https://greggkellogg.net/foaf#me"
}, {
"@id": "https://greggkellogg.net/foaf#me",
"@type": "Person",
"name": "Gregg Kellogg"
}]
}

[ibtisaam-butt-nbs]

I am facing the same issue. I am able to do it, using the inline schema without the key word "@context". However, rdflib returns an empty list or just the schema reference when used with graph.
For example:
[
{
"@id": ":b131978533",
"@type": [
"http://schema.org/Organization"
],
"https://schema.org/subject_duns": [
{
"@value": "131978533"
}
],
"https://schema.org/country_code": [
{
"@value": 1073
}
],
"https://schema.org/business_name": [
{
"@value": "KMART HOLDING CORPORATION"
}
],
"https://schema.org/owner_duns": [
{
"@value": "191222244"
}
],
"https://schema.org/owner_association_type": [
{
"@value": "Parent"
}
],
"https://schema.org/Subsidiary": [
{
"@id": ":b191222244"
}
]
}
]

returns the correct rdfxml.

But this:
{
"@context": {
"SUBJECT_DUNS": {
"@id": "https://schema.org/subject_duns",
"type": "duns"
},
"COUNTRY_CODE": {
"@id": "https://schema.org/country_code",
"type": "integer"
}
},
"@graph":[
{
"@id": "_:b131978533",
"@type": [
"http://schema.org/Organization"
],
"SUBJECT_DUNS": [
{
"@value": "131978533"
}
],
"COUNTRY_CODE": [
{
"@value": 1073
}
]
}
]
}

returns an empty list.