About: http://webisa.webdatacommons.org/421780018

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	In such systems, an excitation source, such as a laser, is used to excite atoms or molecules, raising electrons into higher energy states.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com