About: http://webisa.webdatacommons.org/81482957

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 lower pivot ring 412 is attached to the bottom end of each upright member 402, 404 by screws or other mechanisms.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com