Anchor: One man standing alone on a sidewalk adjusting his hat.
Entailed: A man is standing alone.
Contradiction: The man is standing on a crowded street.
Contradiction: No more nations have joined since 1896.
Contradiction: Dr. Johnson bashed the Scottish people.  
Contradiction: Someone is at home, fast asleep in their own bed.
Contradiction: That isn't something I'd be willing to eat.