Assertion: bass's size | /r/HasProperty | increased in nineteenth century
Facets:
value: to allow for models
type: PURPOSE
Source sentences:
text: The tenorbass trombone did replace the older bass trombones, however, and the bore and bell size were increased later in the nineteenth century to allow for models designed specifically to cope with bass trombone parts; modern bass trombones are derivatives of these late nineteenth century B♭/F trombones that are used to play parts originally intended for the bass trombone in G, F or E♭.