assertion  retraction  graph  subject          predicate        object           datatype    annotation
1          0           graph  obo:CHEBI_88061  rdfs:label       polyamine        xsd:string  
1          0           graph  obo:CHEBI_88061  oio:id           CHEBI:88061      xsd:string  
1          0           graph  obo:CHEBI_88061  rdfs:subClassOf  obo:CHEBI_50047  _IRI        
1          0           graph  obo:CHEBI_88061  rdf:type         owl:Class        _IRI