Assertion: keyboard instrument | /r/HasProperty | the organ
Facets:
Source sentences:
text: By far the oldest and, from the point of view of evolution, the most interesting keyboard instrument is the organ.
text: The most common keyboard instruments are the piano, organ, and various electronic keyboards, including synthesizers and digital pianos.
text: Keyboard instruments used in compositions before the invention of the piano are the organ, the harpsichord, the virginal, the spinnet, the clavichord.
text: Keyboard instruments that belong to the woodwind family are the organ and the accordion.