About: http://webisa.webdatacommons.org/391005742

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	Mercury is a natural substance, one of the basic elements (Hg), and is bound up in the earth's crust where it does no harm.
http://www.w3.org/ns/prov#wasQuotedFrom	nrdc.org