About: http://webisa.webdatacommons.org/167016412

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 device has several disadvantages in use, including the fact that it comprises several loose parts (including small screws) and the mechanism fixing the ball in position is a screw which grips the ball.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es