assertion  retraction  graph  subject           predicate        object                       datatype    annotation
1          0           graph  obo:CHEBI_103210  rdfs:label       hexahydrophthalic anhydride  xsd:string  
1          0           graph  obo:CHEBI_103210  oio:id           CHEBI:103210                 xsd:string  
1          0           graph  obo:CHEBI_103210  rdfs:subClassOf  obo:CHEBI_47022              _IRI        
1          0           graph  obo:CHEBI_103210  rdfs:subClassOf  obo:CHEBI_36609              _IRI        
1          0           graph  obo:CHEBI_103210  rdf:type         owl:Class                    _IRI