PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Hydrogen halides such as hydrogen chloride, hydrogen fluoride and hydrogen bromide may also be utilized.
http://www.w3.org/ns/prov#wasQuotedFrom
  • freepatentsonline.com