Assertion: biped's foot | /r/AtLocation | the ground
Facets:
value: at any given time
type: TEMPORAL
value: always
type: TEMPORAL
Source sentences:
text: Walking is when the footfalls have an evenly spaced gait and one foot is always on the ground.
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: With no "aerial phase", the fast gait does not meet all the criteria of running, although the elephant uses its legs much like other running animals, with the hips and shoulders falling and then rising while the feet are on the ground.
text: With no "aerial phase", the fast gait does not meet all the criteria of running, although the elephant uses its legs much like other running animals, with the hips and shoulders falling and then rising while the feet are on the ground.