About: http://webisa.webdatacommons.org/438170479

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	And about a third of the mercury in the atmosphere comes from naturally occurring sources, such as minerals in rocks and volcanoes.
http://www.w3.org/ns/prov#wasQuotedFrom	state.mn.us