PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Kelp not harvested in protected waters can be contaminated with high levels of lead, cadmium, aluminum, mercury, arsenic and other toxic metals.
http://www.w3.org/ns/prov#wasQuotedFrom
  • thesuperfoods.net