<http://webisa.webdatacommons.org/429468140>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/429468140>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<usgs.gov> .
<http://webisa.webdatacommons.org/429468140>	<http://www.w3.org/ns/prov#value>	"Distinguish between point and nonpoint source pollution and identify examples of each." .
<http://webisa.webdatacommons.org/prov/198181601>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/429468140> .