[ { "assertion": 1, "retraction": 0, "graph": "graph", "subject": "DOID:5508", "predicate": "IAO:0000115", "object": "A high grade ependymoma that is characterized by abnormal growth of the neuroepithelial lining of the ventricular system, has_material_basis_in abnormally proliferating cells derives_from ependymal cells.", "datatype": "xsd:string", "annotation": "{\"dce:type\":[{\"datatype\":\"_IRI\",\"meta\":\"owl:Axiom\",\"object\":\"obo:ECO_0007638\"}],\"oio:hasDbXref\":[{\"datatype\":\"xsd:string\",\"meta\":\"owl:Axiom\",\"object\":\"url:https://en.wikipedia.org/wiki/Ependyma\"},{\"datatype\":\"xsd:string\",\"meta\":\"owl:Axiom\",\"object\":\"url:https://en.wikipedia.org/wiki/Ependymoma\"}]}" } ]