Assertion: treadmill's surface | /r/HasProperty | wide
Facets:
value: for comfortable practice
type: PURPOSE
Source sentences:
text: The 19.5-inch walking surface is wide enough for you to practice the jogging steps.
text: The running surface must be wide enough for comfortable practice and its speed must reach at least 16 km / h.
text: The running surface is nice and wide, and the impact-cushioning is very effective.