Text: e? Cut emissions of nitrogen oxides (NOx) by 67 percent, from current emissions of 5 million tons to a cap of 2.1 million tons in 2008, and to 1.7 million tons in 2018.
Entailment: The goal is to cut nitrogen oxide emissions by 67% by 2018.
Contradiction: There will be a 50% decline in nitrogen oxide emissions from 2008 to 2018.