PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Dangerous substances commonly used in electrical and electronic equipment ??? including heavy metals such as lead, mercury, cadmium, and hexavalent chromium, as well as flame retardants such as polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE) ??? pose environmental and health risks.
http://www.w3.org/ns/prov#wasQuotedFrom
  • thomasnet.com