About: http://webisa.webdatacommons.org/434297388

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 that purpose, the platen 43 may be formed of glass or any rigid and adequately transparent polymeric material such as polymethyl methacrylate, polymethyl alphachloro acrylate, cyclohexyl methacrylate, and the like.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com