PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Each form is iso???structural with one of the two common forms of silicon nitride, beta (??) and alpha (??) and with silicon oxynitride.
http://www.w3.org/ns/prov#wasQuotedFrom
  • syalons.com