About: http://webisa.webdatacommons.org/242460152

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	One ball should be a distinctive colour such as red, or yellow, and the others should be colours which blend with the indoor or outdoor surroundings.
http://www.w3.org/ns/prov#wasQuotedFrom	umn.edu