Assertion: vibraphone | /r/HasAspect | metal bars
Facets:
value: for sustaining the tone
type: PURPOSE
Source sentences:
text: A vibraphone is "a percussion instrument resembling the xylophone but having metal bars and motor-driven resonators for sustaining the tone and producing a vibrato" (source: Webster's Ninth New Collegiate Dictionary).
text: The vibraphone has metal bars, resonating pipes, and has a motor.
text: The Vibraphone has metal bars, which you strike using two hammers.