PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In order to meet the requirement 2) described above, it is necessary to adopt a mechanism which permits interposing optical elements in conjunction with modes of microscopy at a location in the vicinity of the pupil of a condenser lens, and a condenser having such a mechanism is developed as a commercial product available as a universal condenser.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.ca