assertion  retraction  graph  subject          predicate        object                   datatype    annotation
1          0           graph  obo:CHEBI_51447  rdfs:label       organic univalent group  xsd:string  
1          0           graph  obo:CHEBI_51447  oio:id           CHEBI:51447              xsd:string  
1          0           graph  obo:CHEBI_51447  rdfs:subClassOf  obo:CHEBI_33247          _IRI        
1          0           graph  obo:CHEBI_51447  rdf:type         owl:Class                _IRI