Text: You know a great deal more than you're willing to admit." Tuppence paused a moment to admire her own ingenuity, and then said softly: "I shouldn't like to contradict you, Mr. Whittington."
Entailment: Tuppence thinks that Mr. Whittington knows a lot more than he's willing to admit.
Contradiction: Even though Tuppence admires Mr. Whittington, he is completely clueless.