Anchor: A man who looks like a cowboy is riding a bucking horse or bronco in a purple shirt and chaps.
Entailed: A cowboy is riding a horse
Contradiction: The man is afraid
Contradiction: A man walks alone in a happy manner.
Contradiction: Football player is tackling another player.
Contradiction: The colonnades are straight and have no curves.
Contradiction: One may find pottery among the grass.