Anchor: The casinos have no admission charge and formal dress is optional, though long pants for men are required.
Entailed: Men are required to wear long pants in the casino.
Contradiction: Formal dress is absolutely required in the casino.
Contradiction: A man is completely dry.
Contradiction: The highway is a straight shot. 
Contradiction: A completely white cat stepped in a puddle.
Contradiction: A man with a top hat is in front of a castle.