<http://webisa.webdatacommons.org/prov/12647559>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/169484546> .
<http://webisa.webdatacommons.org/prov/358953715>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/169484546> .
<http://webisa.webdatacommons.org/169484546>	<http://www.w3.org/ns/prov#value>	"events, such as hurricanes or flooding, that can expose concentrations" .
<http://webisa.webdatacommons.org/169484546>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/169484546>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<fws.gov> .