Assertion: trombone's trigger | /r/CapableOf | tune the instrument
Facets:
value: to allow
type: PURPOSE
value: to d
type: OTHER
value: to f
type: OTHER
Source sentences:
text: Modern bass trombones differ from the F trombone style because they have wider pipes, they are tuned to B flat, and they are equipped with triggers that tune the instrument to F or D to allow it to play lower notes.