assertion  retraction  graph  subject          predicate        object                    datatype    annotation
1          0           graph  obo:CHEBI_36962  rdfs:label       organochalcogen compound  xsd:string  
1          0           graph  obo:CHEBI_36962  oio:id           CHEBI:36962               xsd:string  
1          0           graph  obo:CHEBI_36962  rdfs:subClassOf  obo:CHEBI_33304           _IRI        
1          0           graph  obo:CHEBI_36962  rdfs:subClassOf  obo:CHEBI_33285           _IRI        
1          0           graph  obo:CHEBI_36962  rdf:type         owl:Class                 _IRI