<http://webisa.webdatacommons.org/415158924>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<voanews.com> .
<http://webisa.webdatacommons.org/prov/279942829>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/415158924> .
<http://webisa.webdatacommons.org/415158924>	<http://www.w3.org/ns/prov#value>	" gases such as CH4,SO2,03 and NO, and NO2.?" .
<http://webisa.webdatacommons.org/415158924>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .