<http://webisa.webdatacommons.org/prov/453968903>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/232092896> .
<http://webisa.webdatacommons.org/232092896>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/45980662>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/232092896> .
<http://webisa.webdatacommons.org/232092896>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<gao.gov> .
<http://webisa.webdatacommons.org/232092896>	<http://www.w3.org/ns/prov#value>	"Some chemicals, such as lead and mercury," .