About: http://webisa.webdatacommons.org/85610296

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	(7) The optical amplifier is not limited to use the Er-doped optical fiber amplifier, but may be one of an optical fiber amplifier doped with Pr or other materials, a solid laser amplifier, and a semiconductor laser amplifier.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com