<http://webisa.webdatacommons.org/319662937>	<http://www.w3.org/ns/prov#value>	" storage tanks, and other underground structures made of uncoated steel should be" .
<http://webisa.webdatacommons.org/319662937>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<docstoc.com> .
<http://webisa.webdatacommons.org/319662937>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/290195752>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/319662937> .