Anchor: A crowd of people walking in the street of a city.
Entailed: It is a busy street.
Contradiction: The crowd is walking to their death.
Contradiction: A woman is going for a swim on the beach.
Contradiction: Some of the housing areas in Edinburgh were overpopulated. 
Contradiction: Flat and parcel systems don't coincide 
Contradiction: You paid for the top notch care you received.