<http://webisa.webdatacommons.org/364527080>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<marketplace.org> .
<http://webisa.webdatacommons.org/prov/212931733>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/364527080> .
<http://webisa.webdatacommons.org/364527080>	<http://www.w3.org/ns/prov#value>	"obligations are market-based contracts, including exchanges and futures, for the purchase of products such as crude oil, unfractionated natural gas liquids, natural gas and power." .
<http://webisa.webdatacommons.org/364527080>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .