PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Persulfate can be additionally activated at both high and low pH, by heat or by peroxides, including calcium peroxides.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com