PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The pH may be adjusted by any means known in the art, including adding acid or base to the fluid, or bubbling CO2 through the fluid and the like.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com