About: http://webisa.webdatacommons.org/85582386

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	I have used the numeral 1 to designate an elongated generally rectangular crystal transducer element which may be a barium titanate or other similar piezoelectric crystal having the necessary properties to function as desired.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com