Anchor: A man is working with fire and tar to repair a roof.
Entailed: A man at work.
Contradiction: The man is playing video games.
Contradiction: It is never worth visiting the Taj Mahal.
Contradiction: If the response-to-advertising mail were also added to advertising mail the items would be counted twice.
Contradiction: a very old woman plays a harp inaudibly
Contradiction: Tuppence admitted that she was thinking of someone.