About: http://webisa.webdatacommons.org/112012852

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	For example, the whole purpose of mining is to take soil and rock and separate out the valuable ingredients such as gold, silver, copper, or other elements.
http://www.w3.org/ns/prov#wasQuotedFrom	chemistryland.com