About: http://webisa.webdatacommons.org/114646568

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	U.S. Pat. No. 6,357,827 (Brightbill et al) discloses a device including a two degree-of-freedom pivot supporting a platform.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com