Anchor: Therefore, why not wait in ambush for Conrad behind the door, and when he entered bring down a chair, or one of the decrepit pictures, smartly on to his head.
Entailed: Conrad was being plotted against, to be hit on the head.
Contradiction: Conrad never passed by the door, and therefore was never ambushed.
Contradiction: For people are running down the road.
Contradiction: There is a woman tending to the baby boy.
Contradiction: A  man is standing near a fabric chair.
Contradiction: A lady is walking in the snow.