Assertion: bass trombone | /r/HasProperty | extra tubing
Facets:
value: sometimes
type: TEMPORAL
value: to allow
type: PURPOSE
value: on the f-attachment
type: LOCATION
Source sentences:
text: Some single valve bass trombones have E-attachments instead of F-attachments, or sometimes there is extra tubing on the F-attachment to allow it to be used as an E-attachment if desired.