<http://webisa.webdatacommons.org/prov/455953736>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/147819268> .
<http://webisa.webdatacommons.org/147819268>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/147819268>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.ca> .
<http://webisa.webdatacommons.org/147819268>	<http://www.w3.org/ns/prov#value>	"The matrix material in the pad is preferably a polymeric material, such as acid resistant polymers, polyurethanes, highly cross-linked epoxies, highly fluorinated elastomers, and other suitable materials." .