assertion  retraction  graph  subject          predicate        object                         datatype    annotation
1          0           graph  obo:CHEBI_59097  rdfs:label       tetrachlorophthalic anhydride  xsd:string  
1          0           graph  obo:CHEBI_59097  oio:id           CHEBI:59097                    xsd:string  
1          0           graph  obo:CHEBI_59097  rdfs:subClassOf  obo:CHEBI_36609                _IRI        
1          0           graph  obo:CHEBI_59097  rdfs:subClassOf  obo:CHEBI_26888                _IRI        
1          0           graph  obo:CHEBI_59097  rdf:type         owl:Class                      _IRI