About: http://webisa.webdatacommons.org/394228694

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	In some embodiments, the ball may be illuminated by infrared or other non-visible light, in which case the speckles may be implemented in a manner which is visible to the associated light source but opaque to visible light.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca