<http://webisa.webdatacommons.org/prov/38022255>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/341220068> .
<http://webisa.webdatacommons.org/341220068>	<http://www.w3.org/ns/prov#value>	"In addition to natural gas, Marcellus shale contains arsenic, mercury, thallium, chromium, and other heavy metals." .
<http://webisa.webdatacommons.org/341220068>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/360924519>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/341220068> .
<http://webisa.webdatacommons.org/341220068>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<frackcheckwv.net> .