PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Fluorescent lights;Electrical switches and relays used in certain devices and equipment, such as lighting, thermostats, pumps, space heaters and computers;Dental amalgam.While mercury use in the United States has declined, the U. S. Environmental Protection Agency estimates that manufacturers use 500 - 600 metric tons of mercury annually as part of their production processes or to create products
http://www.w3.org/ns/prov#wasQuotedFrom
  • illinois.gov