assertion  retraction  graph  subject          predicate        object                         datatype    annotation
1          0           graph  obo:CHEBI_36609  rdfs:label       cyclic dicarboxylic anhydride  xsd:string  
1          0           graph  obo:CHEBI_36609  oio:id           CHEBI:36609                    xsd:string  
1          0           graph  obo:CHEBI_36609  rdfs:subClassOf  obo:CHEBI_36607                _IRI        
1          0           graph  obo:CHEBI_36609  rdfs:subClassOf  obo:CHEBI_35873                _IRI        
1          0           graph  obo:CHEBI_36609  rdf:type         owl:Class                      _IRI