About: http://webisa.webdatacommons.org/190288279

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	I???m using the Logitech thump operated trackball since the first Trackman Marble series and think, that those devices are the best input devices on the marked and the design has been improved by each new generation.
http://www.w3.org/ns/prov#wasQuotedFrom	logitech.com