Anchor: An old, tired man is leading a donkey burdened down with loads of green weeds.
Entailed: A man walks a donkey.
Contradiction: Slytherins play fair.
Contradiction: There is nowhere to purchase alcohol or cigarettes. 
Contradiction: She it outside in the snow
Contradiction: The lady is carrying three baskets.
Contradiction: The main method of transport in the past was horseback.