Anchor: First, they must model the dispersion and transport of pollutants through the atmosphere.
Entailed: They must model the dispersion of pollutants through the atmosphere in the first place.
Contradiction: They must not model the dispersion of pollutants through the atmosphere in the first place.
Contradiction: The cat is chewing on a stick.
Contradiction: He stared over my head in a state of shock.
Contradiction: The two woman are sitting in a field.
Contradiction: A clown is blowing bubbles.