Assertion: pedal | /r/HasProperty | una corda
Facets:
Source sentences:
text: The oldest surviving English grand, built by Backers in 1772, and many Broadwood grands had two pedals, una corda and damper, which were attached to the legs on the left and right of the keyboard.
text: There are two standard foot pedals on the piano : the "una corda" and the "sustain.