<http://webisa.webdatacommons.org/119210676>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/326952422>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/119210676> .
<http://webisa.webdatacommons.org/119210676>	<http://www.w3.org/ns/prov#value>	"As the American frontier expanded and developed, cheap, accessible heat and power was a key." .
<http://webisa.webdatacommons.org/119210676>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<blogspot.com> .