About: http://webisa.webdatacommons.org/188044759

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	To employ separate lasers at different wavelengths is impractical because of the accompanying increase in cost and complexity of such systems, particularly in systems where space is of a premium.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk