About: http://webisa.webdatacommons.org/321954848

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	Referring to FIG. 5, FIG. 6 and FIG. 8, note that a rounded object such as a ball can act as a joint having motion in three degrees of freedom.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr