<http://webisa.webdatacommons.org/94113848>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/290607525>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/94113848> .
<http://webisa.webdatacommons.org/94113848>	<http://www.w3.org/ns/prov#value>	"The NPI keeps track of more than 90 substances, including arsenic, lead and sulphur dioxide that can harm human health and the environment." .
<http://webisa.webdatacommons.org/prov/319273428>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/94113848> .
<http://webisa.webdatacommons.org/94113848>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<phys.org> .