About: http://webisa.webdatacommons.org/180936080

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 main contribution to the force, either from the frame, the optical system or another element may be chosen, e.g. to suit particular or structural preferences or demands.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es