<http://webisa.webdatacommons.org/prov/436071365>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/154398600> .
<http://webisa.webdatacommons.org/154398600>	<http://www.w3.org/ns/prov#value>	"Background of the InventionThe combustion and gasification of fossil fuel such as coal generates flue gas that contains mercury and other trace elements that originate from the fuel." .
<http://webisa.webdatacommons.org/154398600>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<docstoc.com> .
<http://webisa.webdatacommons.org/154398600>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .