About: http://webisa.webdatacommons.org/322457270

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 vertical and horizontal support members are permanently joined by welding or brazing, or other joining process, or they may be assembled with fasteners, such as rivets or bolts.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com