assertion  retraction  graph  subject          predicate        object            datatype    annotation
1          0           graph  obo:CHEBI_35467  rdfs:label       phosphorodiamide  xsd:string  
1          0           graph  obo:CHEBI_35467  oio:id           CHEBI:35467       xsd:string  
1          0           graph  obo:CHEBI_35467  rdfs:subClassOf  obo:CHEBI_17102   _IRI        
1          0           graph  obo:CHEBI_35467  rdf:type         owl:Class         _IRI