Anchor: Two bicyclists taking a break from a ride at a restaurant.
Entailed: Two bicyclist having a meal.
Contradiction: two bicyclist racing to the finish line.
Contradiction: There is no way to undermine confidence in government institutions.
Contradiction: A group of people are looking at something.
Contradiction: We did not look at her at all.  
Contradiction: Alfred Inglethorp denied buying any poison.