About: http://webisa.webdatacommons.org/160616377

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	HOWEVER, the question is not if lead, arsenic and mercury are present, because lead, arsenic and mercury, like other minerals are everywhere in nature.
http://www.w3.org/ns/prov#wasQuotedFrom	longevinst.org