About: http://webisa.webdatacommons.org/137355643

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 FIG. 2, the tone hole are replaced with momentary switches connected to the address inputs of a decoding chip such as a ROM or EPROM, programmed to establish the keyboard fingering system desired.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com