Assertion: piano's string | /r/CapableOf | vibrate at same speed
Facets:
value: exactly
type: DEGREE
Source sentences:
text: Each note, from the treble (highest in pitch, at the right-hand end of the keyboard) down toward the bass (low, at left-hand end of the keyboard), is produced by three strings vibrating at exactly the same speed, sounding together when struck by their hammer.