<http://webisa.webdatacommons.org/255538246>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<jiskha.com> .
<http://webisa.webdatacommons.org/255538246>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/255538246>	<http://www.w3.org/ns/prov#value>	"Beijing, china is a huge industrial and population center. because of this its what is a major problem?" .
<http://webisa.webdatacommons.org/prov/159620563>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/255538246> .