PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • It is becoming increasingly necessary to have production sources directly on the user site, considering increasing requirements for marketable hydrogen of the order of about +10% per year, and future needs felt in industry in general and particularly in chemicals industry, petrochemicals industry, metallurgy, electronics, fine chemicals industry, in the decentralized production of energy, clean an
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com