<http://webisa.webdatacommons.org/187415573>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<epa.gov> .
<http://webisa.webdatacommons.org/prov/345134488>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/187415573> .
<http://webisa.webdatacommons.org/187415573>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/187415573>	<http://www.w3.org/ns/prov#value>	"How do we know that non-industrial exposures to asbestos are a problem?" .