Anchor: Well, his proof does leave one loophole.
Entailed: There is a loophole in his proof.
Contradiction: There are no loopholes in his proof.
Contradiction: A man is showing his bike to his friends.
Contradiction: There was a Montessori section at the majority of them.
Contradiction: Nitrogen is not an essential nutrient.
Contradiction: Peace of mind is very valuable.