PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Additionally, there are a number of azo dye patents (DE 19521589, U.S. Pat. No. 3,716,368, DE 2216592, FR 1578556) which disclose polysulfonated naphthalene azo compounds.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com