assertion  retraction  graph  subject       predicate        object     datatype    annotation
1          0           graph  DOID:0050923  rdfs:subClassOf  DOID:3963  _IRI        
1          0           graph  DOID:0080524  rdfs:subClassOf  DOID:3963  _IRI        
1          0           graph  DOID:0080522  rdfs:subClassOf  DOID:3963  _IRI        
1          0           graph  DOID:3963     oio:id           DOID:3963  xsd:string  
1          0           graph  DOID:3973     rdfs:subClassOf  DOID:3963  _IRI        
1          0           graph  DOID:4687     rdfs:subClassOf  DOID:3963  _IRI