Assertion: foot | /r/AtLocation | the ground
Facets:
value: at any given time
type: TEMPORAL
Source sentences:
text: Walking is the most common gait, where some feet are on the ground at any given time, and found in almost all legged animals.
text: Phase one is when your foot hits the ground (heel-strike); phase two is when your whole foot is on the ground (mid-stance); and phase three is when you start to take the next step (toe-off).