Anchor: Most tour boats provide a choice of open-air and glassed-in seating.
Entailed: There's a choice of open-air and glassed-in seating for most tour boats.
Contradiction: All tour boats only offer open-air seating.
Contradiction: Men are fighting after a basketball game.
Contradiction: A dog runs through the snow
Contradiction: They play hocket in the park
Contradiction: A mother is sitting next to her child