Assertion: piano's string | /r/HasProperty | arranged across rectangular case
Facets:
value: diagonally
type: MANNER
value: above the hammers
type: LOCATION
value: with the keyboard
type: OTHER
Source sentences:
text: The square piano is a type of piano that has horizontal strings arranged diagonally across the rectangular case above the hammers and with the keyboard set in the long side, with the sounding board above a cavity in the short side.