About: http://webisa.webdatacommons.org/341654302

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	But coal prices have fallen about 30 percent in the past 18 months and mining giants such as BHP Billiton and Rio Tinto have signaled that they may sell some of their coal assets.
http://www.w3.org/ns/prov#wasQuotedFrom	upi.com