PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • It is gentler than bleaching agents such as hydrogen peroxide or carbamide peroxide at equivalent concentrations, and is therefore now preferred for use in home teeth whitening kits to avoid problems of irritation and teeth sensitivity.
http://www.w3.org/ns/prov#wasQuotedFrom
  • teeth-whitening-kits.org.uk