About: http://webisa.webdatacommons.org/421697354

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	In one embodiment, bottom plate 162 and top plate 164 are extruded from plastic material such as polyethylene or polyvinyl chloride (PVC).
http://www.w3.org/ns/prov#wasQuotedFrom	google.com