About: http://webisa.webdatacommons.org/287834767

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 upper frame 2 may preferably be made of either a metal such as iron or aluminium alloy, or a plastic material.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com