assertion  retraction  graph  subject    predicate        object    datatype    annotation
1          0           graph  DOID:3029  rdfs:subClassOf  DOID:234  _IRI        
1          0           graph  DOID:3038  rdfs:subClassOf  DOID:234  _IRI        
1          0           graph  DOID:234   oio:id           DOID:234  xsd:string  
1          0           graph  DOID:3033  rdfs:subClassOf  DOID:234  _IRI