PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Ozone is a gas that can be found both at the upper levels of the atmosphere and at ground levels.
http://www.w3.org/ns/prov#wasQuotedFrom
  • natureworldnews.com