About: http://webisa.webdatacommons.org/311460331

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	A plurality of upper support elements 18 are rigidly secured by welding or other means to the upper surfaces of members 14 and 16 and extend perpendicularly to the members 14 and 16.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com