<http://webisa.webdatacommons.org/prov/231937883>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/279207250> .
<http://webisa.webdatacommons.org/prov/236127282>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/279207250> .
<http://webisa.webdatacommons.org/279207250>	<http://www.w3.org/ns/prov#value>	"Coal (from underground and surface mines), natural gas, petroleum (oil), crushed stone and limestone are the most valuable products mined in" .
<http://webisa.webdatacommons.org/279207250>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<netstate.com> .
<http://webisa.webdatacommons.org/prov/27320196>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/279207250> .
<http://webisa.webdatacommons.org/279207250>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/222433872>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/279207250> .