<http://webisa.webdatacommons.org/prov/478034979>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/371782133> .
<http://webisa.webdatacommons.org/371782133>	<http://www.w3.org/ns/prov#value>	"problems, such as groundwater contamination, are not necessarily" .
<http://webisa.webdatacommons.org/371782133>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/371782133>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<sec.gov> .