About: http://webisa.webdatacommons.org/134840894

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	The frame 1 may be constructed of any durable material, including any form of high impact polymer, but is preferably metal, such as aluminum.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com