PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Combining these databases with advanced search and analysis technologies, CAS delivers the most complete, cross-linked, and effective digital information environment for scientific research and discovery through such products as SciFinder??, STN??, STN Express??, and STN?? AnaVistTM, as well as services, such as Science IP??.
http://www.w3.org/ns/prov#wasQuotedFrom
  • cas.org