Anchor: A teaser horse is the warm-up act, an important but ultimately expendable creature.
Entailed: A teaser horse comes out first.
Contradiction: A teaser horse comes out last.
Contradiction: The basketball player took the last shot of the game.
Contradiction: The EPA's Office of Water does not keep electronic rulemaking materials.
Contradiction: He gives as much as he is capable of. 
Contradiction: The people are surfing.