Anchor: A person working in a field.
Entailed: Someone is outside.
Contradiction: The person is asleep.
Contradiction: Some people are in a car.
Contradiction: That would assume that the president didn't feel stressed out when he realized he was doing what many people say is immoral. 
Contradiction: It is impossible for you to make an appropriate, defensible assessment.
Contradiction: A person rides a horse over a plane.