About: http://webisa.webdatacommons.org/416599488

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 economic cost of getting resources out of the ground is the biggest constraint, far more of a factor than the actual amount of minerals in the ground.
http://www.w3.org/ns/prov#wasQuotedFrom	outrunchange.com