About: http://webisa.webdatacommons.org/388475118

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	Yet another aspect of the invention is an apparatus at which a ball is thrown to determine the accuracy of the throw, to catch the ball and to throw the ball back to a source.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com