About: http://webisa.webdatacommons.org/156003151

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	It is desirable that a material such as silica which tends to form glass is added in an amount of not more than 2% by weight with respect to the piezoelectric/electrostrictive material.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com