About: http://webisa.webdatacommons.org/423237436

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	The sliding portions, i.e. a lens, a lens holder, a crank device, etc. would also become heavy.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com