About: http://webisa.webdatacommons.org/21534812

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	This approach is only an example and other similar methods to convert the symmetrical input beam into an asymmetrical coupled light beam are possible.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca