assertion  retraction  graph  subject       predicate        object     datatype    annotation
1          0           graph  DOID:0050615  rdfs:subClassOf  DOID:1579  _IRI        
1          0           graph  DOID:0050621  rdfs:subClassOf  DOID:1579  _IRI        
1          0           graph  DOID:1579     oio:id           DOID:1579  xsd:string  
1          0           graph  DOID:974      rdfs:subClassOf  DOID:1579  _IRI        
1          0           graph  DOID:8469     rdfs:subClassOf  DOID:1579  _IRI        
1          0           graph  DOID:0050161  rdfs:subClassOf  DOID:1579  _IRI