<http://webisa.webdatacommons.org/prov/57005060>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/293645821> .
<http://webisa.webdatacommons.org/prov/57766974>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/293645821> .
<http://webisa.webdatacommons.org/293645821>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/293645821>	<http://www.w3.org/ns/prov#value>	"In one embodiment, the apparatus can include a membrane formed from a compressible, flexible material, such as neoprene or silicone, and having a first portion with a thickness greater than that of a second portion." .
<http://webisa.webdatacommons.org/293645821>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .