Anchor: And he fancies the risk not great since he will enter in the guise of a friend!" Tuppence flushed, then opened her mouth impulsively.
Entailed: Tuppence said he doesn't think there is much of a risk.
Contradiction: Tuppence told us that he believes it's too risky to disguise himself as a stranger.
Contradiction: man teaches kid to swim
Contradiction: If it was a sylph, it could move them in their current small size. 
Contradiction: People watching the ocean at home.
Contradiction: the man is playing pool