<http://webisa.webdatacommons.org/prov/29966386>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/173788515> .
<http://webisa.webdatacommons.org/prov/430096155>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/173788515> .
<http://webisa.webdatacommons.org/173788515>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/173788515>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<gasp-pgh.org> .
<http://webisa.webdatacommons.org/173788515>	<http://www.w3.org/ns/prov#value>	"The fact is, air quality is a problem that Pittsburgh knows how to fix ??? or used to." .