PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Substances such as alcohol, marijuana, cocaine and methamphetamine can lead to increased risks on work sites, particularly in safety-sensitive positions such as heavy equipment operators and construction and maintenance trades, where a fleeting moment of inattention or a slow reaction can lead to a tragic outcome, says DARRPP in a news release.
http://www.w3.org/ns/prov#wasQuotedFrom
  • mining.com