assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:4437  rdfs:subClassOf  DOID:3842  _IRI        
1          0           graph  DOID:3842  oio:id           DOID:3842  xsd:string  
1          0           graph  DOID:4435  rdfs:subClassOf  DOID:3842  _IRI        
1          0           graph  DOID:3643  rdfs:subClassOf  DOID:3842  _IRI