About: http://webisa.webdatacommons.org/324389290

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 order to maintain the prescribed distance between the two beams, however, some sort of control system must be used to keep the two beams separated the desired amount.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com