Assertion: piano's soundboard | /r/HasProperty | positioned below key
Facets:
Source sentences:
text: This instrument has a braceless back, and a soundboard positioned below the keys—meaning that long metal rods pulled on the levers to make the hammers strike the strings.
text: This instrument has a braceless back, and a soundboard positioned below the keys—meaning that long metal rods pulled on the levers to make the hammers strike the strings.