<http://webisa.webdatacommons.org/prov/296711893>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/13728320> .
<http://webisa.webdatacommons.org/13728320>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/13728320>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<secinfo.com> .
<http://webisa.webdatacommons.org/13728320>	<http://www.w3.org/ns/prov#value>	"The Clean Air Act indirectly affects coal mining operations by extensively regulating the air emissions of sulfur dioxide, nitrogen oxides, mercury and other compounds emitted by coal-fired electricity generating plants and" .
<http://webisa.webdatacommons.org/prov/49916369>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/13728320> .