<http://webisa.webdatacommons.org/60377930>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<wunc.org> .
<http://webisa.webdatacommons.org/60377930>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/179558432>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/60377930> .
<http://webisa.webdatacommons.org/60377930>	<http://www.w3.org/ns/prov#value>	"The sand is a critical part of the hydraulic fracturing method of oil and gas extraction." .