About: http://webisa.webdatacommons.org/228375450

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 terms of its functions, the first user input unit 210 is used for inputting commands such as start, end, scroll or the like, and the second user input unit 215 is used for inputting numbers, characters, symbols, or the like.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com