assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:5308  rdfs:subClassOf  DOID:3502  _IRI        
1          0           graph  DOID:3502  oio:id           DOID:3502  xsd:string  
1          0           graph  DOID:3501  rdfs:subClassOf  DOID:3502  _IRI        
1          0           graph  DOID:3693  rdfs:subClassOf  DOID:3502  _IRI        
1          0           graph  DOID:8110  rdfs:subClassOf  DOID:3502  _IRI