PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • An alkaline material or alkali such as sodium hydroxide or potassium hydroxide can be added in amounts up to about 2% to adjust pH in the absence of silicate.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com