Anchor: Then Drew found he had his hands full trying to pull up the colt and persuade him that the race was indeed over.
Entailed: Drew found it difficult to control the colt and convince him the race was finished.
Contradiction: The colt sat quietly under Drew, knowing his defeat. 
Contradiction: Choice d is vanilla yogurt
Contradiction: They do it whenever it is really random.
Contradiction: He had no interest in education.
Contradiction: The men are talking to each other.