Anchor: Since NOx emissions result in formation of ground-level ozone, reducing NOx emissions will reduce ozone levels and thus reduce the deleterious effects of ozone on human health and ecosystems.
Entailed: The formation of ground level ozone is affected by NOx emissions.
Contradiction: Reducing NOx emissions will have no effect on human health.
Contradiction: We definitely need that!
Contradiction: A girl sits alone on a park bench in the middle of a cityscape.
Contradiction: He still needed to see more. 
Contradiction: You are seeing more women in positions of power, but there is still a long way to go for equality.