About: http://webisa.webdatacommons.org/198409661

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	Many instruments, such as the piano, violin and guitar produce a concert C when a C is played, hence these instruments play the `Key of C`.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com