<http://webisa.webdatacommons.org/430872856>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<docstoc.com> .
<http://webisa.webdatacommons.org/prov/214617136>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/430872856> .
<http://webisa.webdatacommons.org/430872856>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/137638006>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/430872856> .
<http://webisa.webdatacommons.org/430872856>	<http://www.w3.org/ns/prov#value>	" system in the 1980s that covered different types of air and water pollution as well as waste" .