Assertion: flute's key | /r/HasProperty | added
Facets:
Source sentences:
text: Two keys (long F and high C) can be added to improve playability, and two more keys (low C and C#) can be added to extend the range of the instrument to middle C.
text: Two keys (long F and high C) can be added to improve playability, and two more keys (low C and C#) can be added to extend the range of the instrument to middle C.