<http://webisa.webdatacommons.org/355814570>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<nhpr.org> .
<http://webisa.webdatacommons.org/prov/483262312>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/355814570> .
<http://webisa.webdatacommons.org/355814570>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/300176786>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/355814570> .
<http://webisa.webdatacommons.org/355814570>	<http://www.w3.org/ns/prov#value>	"He spent more than half his career investigating cases of methane migration, where gas from wells, coal mines, landfills or other sources broke loose and made its way to the surface." .