<http://webisa.webdatacommons.org/prov/472538506>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/116810355> .
<http://webisa.webdatacommons.org/116810355>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/116810355>	<http://www.w3.org/ns/prov#value>	"The above mentioned ultrasonic wave oscillator is formed of a piezoelectric material such as quartz or PZT (a solid solution of lead zirnonate PbZrO3 and lead titanate PbTiO3) so as to generate ultrasonic waves when impressed with electric signals or generate electric signals when excited by ultrasonic waves." .
<http://webisa.webdatacommons.org/116810355>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/101106032>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/116810355> .