About: http://webisa.webdatacommons.org/325673131

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 refinement process is labor intensive and requires resources such as water and carbon.
http://www.w3.org/ns/prov#wasQuotedFrom	commoditytrading.net