assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:1988  rdfs:subClassOf  DOID:1993  _IRI        
1          0           graph  DOID:5528  rdfs:subClassOf  DOID:1993  _IRI        
1          0           graph  DOID:1996  rdfs:subClassOf  DOID:1993  _IRI        
1          0           graph  DOID:1995  rdfs:subClassOf  DOID:1993  _IRI        
1          0           graph  DOID:1993  oio:id           DOID:1993  xsd:string  
1          0           graph  DOID:5777  rdfs:subClassOf  DOID:1993  _IRI        
1          0           graph  DOID:1992  rdfs:subClassOf  DOID:1993  _IRI        
1          0           graph  DOID:7356  rdfs:subClassOf  DOID:1993  _IRI