About: http://webisa.webdatacommons.org/9634209

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 example, the first polymeric material may be a polycarbonate, such as a bisphenol A based polycarbonate, or a polyethylene terephthalate, both of which possess positive stress optical coefficients.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com