Anchor: You don't get such books unless you're at least of student rating. He sighed, then shrugged.
Entailed: You can only access these books if you are a student.
Contradiction: Anyone can get these books anytime they want.
Contradiction: The children are swimming.
Contradiction: Cynthia vouched for us to free us. 
Contradiction: A man with a blue shirt sat quietly while everyone else spoke.
Contradiction: A boy is drinking out of the water hose.