Assertion: brass | /r/HasAspect | valve
Facets:
value: to extend the range of notes
type: PURPOSE
value: often
type: TEMPORAL
Source sentences:
text: Most brass instruments have valves attached to their long pipes; the valves look like buttons.
text: Most brass instruments have valves attached to their long pipes; the valves look like buttons.
text: Often they have valves or other mechanisms to extend the range of notes that can be played with the instrument.