PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Coal is mostly used to produce electricity, and the world???s annual consumption is presently around 6.2 billion tonnes, with estimates that 75 percent of this figure or 4.65 billion tonnes is used to produce electricity in the world???s coal-fired power stations.
http://www.w3.org/ns/prov#wasQuotedFrom
  • blogspot.com