<http://webisa.webdatacommons.org/prov/319273426>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/338741232> .
<http://webisa.webdatacommons.org/338741232>	<http://www.w3.org/ns/prov#value>	"These substances, such as sulfur dioxide and aerosols, are dangerous to human health." .
<http://webisa.webdatacommons.org/338741232>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/318619740>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/338741232> .
<http://webisa.webdatacommons.org/338741232>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<justearth.net> .