Anchor: One man is helping another man get under a boundary line.
Entailed: Two men sneak across a boundary.
Contradiction: One man is sleeping.
Contradiction: There are no environmental limitations on train manufacturers 
Contradiction: a female swimmer does the backstroke
Contradiction: You don't have to admire that Merrill's Any old Alley opportunist can write a novelty Italian song--it's a very simple thing to do.
Contradiction: Local band performing on street corner.