PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Innovations in hydraulic fracturing and horizontal drilling have helped make the U.S. the largest producer of natural gas in the world, and these technologies are a great example of how we can grow the economy, create jobs, and protect the environment.??? API is the only national trade association representing all facets of the oil and natural gas industry, which supports 9.8 million U.S. jobs and
http://www.w3.org/ns/prov#wasQuotedFrom
  • ohio.com