Anchor: Twelve whipmasters pushed nearly one hundred slaves.
Entailed: It was the whipmasters who pushed a large number of slaves. 
Contradiction: Thirty one whipmasters were needed to push 100 slaves. 
Contradiction: The woman and student are playing with puppies.
Contradiction: It is known that the coco contained no strychnine.
Contradiction: A mother sits on a blanket alone.
Contradiction: A yellow dog is playing near flowers.