PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Other reducing agents include water- soluble thiosulfates, hydrosulfites, tertiary amines, such as triethanolamine and the like, thiourea, and salts of metals such as the sulfate salts of metals capable of existing in more than one valence state such as cobalt, iron, nickel, and copper.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com