Assertion: piano's range | /r/HasProperty | increased to the seven octave or morerange
Facets:
value: over time
type: TEMPORAL
Source sentences:
text: Over time, the tonal range of the piano was also increased from the five octaves of Mozart's day to the seven octave (or more) range found on today's pianos.
text: Over time, the tonal range of the piano was also increased from the five octaves of Mozart's day to the seven octave (or more) range found on today's pianos.