PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The fluoride that contaminates the food and air comes mostly from the clay, which is taken from fluoride-rich soil, Zheng told SciDev.Net.
http://www.w3.org/ns/prov#wasQuotedFrom
  • bio-medicine.org