Assertion: piano's string | /r/CapableOf | produce softer sound
Facets:
Source sentences:
text: In grand piano the hammers will shift a little bit to the side, so if a key has three strings, the hammer will hit only two strings producing a softer sound (that's a clever piano technique, isn't it?)
text: In order to prevent this warping, the strings had to be kept at a lower tension, resulting in a softer sound.