<http://webisa.webdatacommons.org/326348959>	<http://www.w3.org/ns/prov#value>	"Applying an alternating voltage, such as a square wave, will cause the material to vibrate and create a sound." .
<http://webisa.webdatacommons.org/326348959>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/2255229>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/326348959> .
<http://webisa.webdatacommons.org/326348959>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<northwestern.edu> .