About: http://webisa.webdatacommons.org/79728159

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 chair as set forth in claim 12 wherein said spring is a compression spring urging the third link forming tube to rotate in a direction to move the seat and back to an upright position.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com