assertion  retraction  graph  subject       predicate        object     datatype    annotation
1          0           graph  DOID:7480     rdfs:subClassOf  DOID:4556  _IRI        
1          0           graph  DOID:0050872  rdfs:subClassOf  DOID:4556  _IRI        
1          0           graph  DOID:6658     rdfs:subClassOf  DOID:4556  _IRI        
1          0           graph  DOID:4556     oio:id           DOID:4556  xsd:string  
1          0           graph  DOID:7169     rdfs:subClassOf  DOID:4556  _IRI        
1          0           graph  DOID:5583     rdfs:subClassOf  DOID:4556  _IRI