Anchor: I don't know, because I never saw her. 
Entailed: I am unsure about the answer.
Contradiction: I saw her and I know the exact answer.
Contradiction: Wilson is a very greedy and selfish man.
Contradiction: The door wouldn't open even after John rattled the handle rather violently.
Contradiction: Two people ascend the mountain.
Contradiction: It is not necessarily the way to win a war.