<http://webisa.webdatacommons.org/202330799>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<socialsecurity.gov> .
<http://webisa.webdatacommons.org/prov/295025052>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/202330799> .
<http://webisa.webdatacommons.org/202330799>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/202330799>	<http://www.w3.org/ns/prov#value>	"(i) 'Underground coal mine' means a coal mine in which the earth and other materials which lie above the natural deposit of coal (overburden) is not removed in mining." .