PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Science: A new study from the Johns Hopkins School of Public Health in Baltimore (USA), published in the December issue of the Journal of Addictive Diseases shows that tobacco is a gateway drug, if the questionable criterias are applied that are usually applied to marijuana.
http://www.w3.org/ns/prov#wasQuotedFrom
  • cannabis-med.org