About: http://webisa.webdatacommons.org/434848469

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	However, it should be noted that filter medium 66 may be any medium, including a gas, gelatin resin, or other substance, which is selectively moveable into, and out of, the optical path.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com