About: http://webisa.webdatacommons.org/233429906

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 support members are preferably made of wood, however, they may be of any suitable material such as aluminum or steel.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca