<http://webisa.webdatacommons.org/prov/456929332>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/57152169> .
<http://webisa.webdatacommons.org/57152169>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<thechemco.com> .
<http://webisa.webdatacommons.org/57152169>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/57152169>	<http://www.w3.org/ns/prov#value>	"Urea is a raw material used in the manufacture of many important chemicals, such as:" .