assertion  retraction  graph  subject          predicate        object                datatype    annotation
1          0           graph  obo:CHEBI_82448  rdfs:label       N,N'-diethylthiourea  xsd:string  
1          0           graph  obo:CHEBI_82448  oio:id           CHEBI:82448           xsd:string  
1          0           graph  obo:CHEBI_82448  rdfs:subClassOf  obo:CHEBI_51276       _IRI        
1          0           graph  obo:CHEBI_82448  rdf:type         owl:Class             _IRI