Anchor: Between the two shops they would have enough to spike the whole river in a week.
Entailed: They would have enough to spike the entire river.
Contradiction: It would take them several months to spike the river.
Contradiction: There is no such person?
Contradiction: There are numerous buses that serve the pair of museums. 
Contradiction: The people are running away from the fire.
Contradiction: People playing an organized sport.