PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • They work primarily by mopping up harmful free radicals, which are created in response to environmental toxins, such as cigarette smoke, chemicals, sunlight, cosmic and manmade radiation, and pharmaceutical drugs.
http://www.w3.org/ns/prov#wasQuotedFrom
  • mercola.com