About: http://webisa.webdatacommons.org/353913810

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	For the preferred embodiment, the housing is formed of a hard material, such as ceramic, glass, quartz, or a hard metal.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com