Anchor: A cowboy wearing a baseball cap is on a horse in a rodeo corral preparing to throw the rope he is spinning over the young, small steer which he is chasing.
Entailed: A cowboy is chasing a steer.
Contradiction: A cowboy is riding lonesomely on the range.
Contradiction: The Rivo Alto was not settled by humans until the 12th century.
Contradiction: Yes, it is. 
Contradiction: Has Colorado been enriched by our new friends from out of the country?
Contradiction: A kid is riding his skateboard.