About: http://webisa.webdatacommons.org/271810068

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	Furthermore, there is a problem in that optical signals of different wavelengths should be uniform because those optical signals must be transmitted to respective subscribers at a narrow wavelength gap.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com