assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:3507  rdfs:subClassOf  DOID:3355  _IRI        
1          0           graph  DOID:3517  rdfs:subClassOf  DOID:3355  _IRI        
1          0           graph  DOID:3516  rdfs:subClassOf  DOID:3355  _IRI        
1          0           graph  DOID:3355  oio:id           DOID:3355  xsd:string  
1          0           graph  DOID:3520  rdfs:subClassOf  DOID:3355  _IRI        
1          0           graph  DOID:6451  rdfs:subClassOf  DOID:3355  _IRI        
1          0           graph  DOID:6880  rdfs:subClassOf  DOID:3355  _IRI