About: http://webisa.webdatacommons.org/204295139

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	The piezoelectric transducer may have various forms including a flat crystal disk, or other crystal designs, e.g., square, perforated disk, and the like.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com