About: http://webisa.webdatacommons.org/410349972

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 the preferred embodiment, the frame is fabricated from a rigid, lightweight material such as polyvinyl chloride (PVC).
http://www.w3.org/ns/prov#wasQuotedFrom	google.com