<http://webisa.webdatacommons.org/concept/perfluorooctanoic+acid_pfoa_>	<http://webisa.webdatacommons.org/ontology#hasHead>	"pfoa" .
<http://webisa.webdatacommons.org/concept/perfluorooctanoic+acid_pfoa_>	<http://webisa.webdatacommons.org/ontology#hasPreModifier>	"perfluorooctanoic acid" .
<http://webisa.webdatacommons.org/concept/perfluorooctanoic+acid_pfoa_>	<http://www.w3.org/2000/01/rdf-schema#label>	"perfluorooctanoic acid pfoa" .