About: http://webisa.webdatacommons.org/49068881

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	d and employed to control hydraulic or other mechanism for changing the physical position of the radiating antenna, etc., in accordance with any desired predetermined program.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com