Anchor: Chinese whispers aside, the creatures now constitute the city's foremost pest control issue.
Entailed: The city has a problem with pests.
Contradiction: The creatures did not need pest control.
Contradiction: Thousands of historic events is one thing that cannot be found within the walls.
Contradiction: A person examining things at the docks.
Contradiction: The old man is juggling balls.
Contradiction: Poirot wanted to ask the lady about an idea he had.