assertion  retraction  graph  subject    predicate            object                       datatype    annotation
1          0           graph  DOID:6607  rdfs:label           nervous system hibernoma     xsd:string  
1          0           graph  DOID:6607  oio:id               DOID:6607                    xsd:string  
1          0           graph  DOID:6607  oio:hasOBONamespace  disease_ontology             xsd:string  
1          0           graph  DOID:6607  oio:hasExactSynonym  Hibernoma of nervous system  @en         
1          0           graph  DOID:6607  oio:hasDbXref        NCI:C6997                    xsd:string  
1          0           graph  DOID:6607  rdfs:subClassOf      DOID:6293                    _IRI        
1          0           graph  DOID:6607  rdf:type             owl:Class                    _IRI