PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Nitrogen oxide is tied to ground-level ozone, which is especially harmful to children and people with respiratory problems such as asthma.
http://www.w3.org/ns/prov#wasQuotedFrom
  • dirtykilowatts.org