Assertion: gyroscope's axle | /r/HasProperty | placed through the middle of the wheel
Facets:
Source sentences:
text: If you were to hold the wheel on each side by a short axle placed through the middle of the wheel (like a pen) and someone rotated the wheel while you held it, you would notice that if you tried to tip the wheel to one side, it would not go in that direction nearly as easily as it would if it were not spinning.