PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Free radicals are the dangerous byproducts of cellular metabolism that can accumulate in the body and cause a variety of health problems, including cancer.
http://www.w3.org/ns/prov#wasQuotedFrom
  • organicfacts.net