About: http://webisa.webdatacommons.org/18114557

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	To couple an optical fiber end to an optical element, such as a lens, there are three positioning variables: the spacing between the elements, the coupling point relative to the optical axis, and the coupling angle.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com