PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Indeed, it was the low cost and cleaner (compared to coal) attributes of natural gas, along with turbine efficiency improvements, that led to major deployment of natural gas fired power plants in the '80s and '90s.Now, there is a greatly increased concern about using natural gas more efficiently.
http://www.w3.org/ns/prov#wasQuotedFrom
  • blogspot.com