assertion  retraction  graph  subject       predicate        object        datatype    annotation
1          0           graph  DOID:0040005  rdfs:subClassOf  DOID:0040021  _IRI        
1          0           graph  DOID:0040103  rdfs:subClassOf  DOID:0040021  _IRI        
1          0           graph  DOID:0040025  rdfs:subClassOf  DOID:0040021  _IRI        
1          0           graph  DOID:0040024  rdfs:subClassOf  DOID:0040021  _IRI        
1          0           graph  DOID:0040023  rdfs:subClassOf  DOID:0040021  _IRI        
1          0           graph  DOID:0040021  oio:id           DOID:0040021  xsd:string  
1          0           graph  DOID:0040020  rdfs:subClassOf  DOID:0040021  _IRI        
1          0           graph  DOID:0040030  rdfs:subClassOf  DOID:0040021  _IRI