Descr1: 1. A person rides a horse down a hill
  2. The horse lifts its fore legs and is positioned vertically
  3. The horse continues running and floating in the air
  4. The horse is positioned normally again at the bottom of the hill
Descr2: 1. The player is riding a horse
  2. The horse stands upright on its back legs as it runs
  3. The horse stands back on all four legs as it runs
  4. The horse's front-right leg rotates in the air as the horse runs