PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In addition, the sample port can be used to add appropriate materials to adjust the pH of the digesting slurry in the module and to add microbes, enzymes, catalysts and other materials suitable for enhancing methane gas production.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.ca