PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • U.S. researchers found vapour from e-cigarettes contains toxic element chromium and four times more nickel than found in normal cigarettes They were also found to contain lead, zinc and other toxic metals
http://www.w3.org/ns/prov#wasQuotedFrom
  • no-smoke.org