PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This lens is a standard ???4 microscope objective with numerical aperture of 0.10 (one supplier is G J Carl Hansens Eftf Denmark).
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com