PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Fortunately, a medical-grade air purifying system, such as those carried by FreshAirPro, can tackle both allergen-inducing airborne contaminants and the pollutants that can cause them, such as smoke and other harmful gases and chemicals.
http://www.w3.org/ns/prov#wasQuotedFrom
  • freshairpro.com