premise1: A man sitting on a running horse on a dirt track.
premise2: A person is riding a horse down a dirt trail.
premise3: A jockey training his horse.
premise4: Man swiftly riding a horse.
premise: A man sitting on a running horse on a dirt track. A person is riding a horse down a dirt trail. A jockey training his horse. Man swiftly riding a horse.
hypothesis: Some boys run.