Text: But Tuppence had sharp eyes, and had noted the corner of a threepenny detective novel protruding from Albert's pocket, and the immediate enlargement of his eyes told her that her tactics were good, and that the fish would rise to the bait.
Entailment: Tuppence knew that she had caught Albert in her trap.
Contradiction: Tuppence rubbed her eyes and replaced her glasses, but she could see nothing there.