About: http://webisa.webdatacommons.org/214502609

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 ball launcher device of this invention is preferably constructed of plastic such as polyethylene or the like.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com