PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Other frequencies, i.e. frequencies c, d (none in pulse train A) and e in each pulse train are different between the two pulse trains because of the time delay between the positive and negative excursions of each successive pulse of pulse train B. The frequencies c, d and e in pulse train B will vary with the length of the delay.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com