About: http://webisa.webdatacommons.org/131278866

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 resilient rods are made of solid round acetal although other materials can be used such as vinyl, nylon, polyurethanes, etc., as well as hollow tube.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com