PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Beta-carotene is a precursor to vitamin A, and although some beta-carotene is converted to retinol, the active form of vitamin A, that conversion is pretty poor in humans.
http://www.w3.org/ns/prov#wasQuotedFrom
  • chriskresser.com