About: http://webisa.webdatacommons.org/18805852

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	Alternatively, LEDs, lasers, or other sources may be implemented in a SFM with additional apparatus that provides the appropriate characteristics for the electromagnetic radiation for the SFM.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com