About: http://webisa.webdatacommons.org/279288159

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	For example, elements such as optical switches, optical multiplexers, filters, diffraction gratings, couplers, splitters, and numerous other suitable components may be included or coupled to optical communication system 10.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com