Anchor: I shouldn't wonder if she stole those papers from Danvers to begin with."
Entailed: I should not think about whether she stole the papers or not.
Contradiction: I'm going to keep thinking about her stealing those papers.
Contradiction: The CIOs have to report to the chairman of the board only.
Contradiction: You are paying for your children's school fees.
Contradiction: The keys are not needed.
Contradiction: the people are walking