<http://webisa.webdatacommons.org/prov/45341215>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/427643952> .
<http://webisa.webdatacommons.org/427643952>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<waterfilters.net> .
<http://webisa.webdatacommons.org/427643952>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/427643952>	<http://www.w3.org/ns/prov#value>	"Nitrate is a compound that is formed naturally when nitrogen combines with oxygen or ozone." .