About: http://webisa.webdatacommons.org/443901609

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 is made of a piezoelectric material such as polyvinylidene fluoride (PVDF) or piezoelectric ceramic.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com