About: http://webisa.webdatacommons.org/442718776

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	Upon reaching the opposite end or an arbitrary intermediate point of the string which has been clamped against vibration, a return signal or echo results from reflection of the test signal which return signal is detected by a receiver.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com