About: http://webisa.webdatacommons.org/340987388

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	Heavy metals such as lead, mercury, manganese, cadmium and chromium are generally toxic to life forms in grater than trace amounts.
http://www.w3.org/ns/prov#wasQuotedFrom	preservearticles.com