<http://webisa.webdatacommons.org/218123701>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/85233328>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/218123701> .
<http://webisa.webdatacommons.org/prov/37730808>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/218123701> .
<http://webisa.webdatacommons.org/218123701>	<http://www.w3.org/ns/prov#value>	"between PAHs and metals, such as lead and arsenic, have not been studied." .
<http://webisa.webdatacommons.org/218123701>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<cdc.gov> .