Text: Cut sulfur dioxide (SO2) emissions by 73 percent, from current emissions of 11 million tons to a cap of 4.5 million tons in 2010, and 3 million tons in 2018.
Entailment: There is a goal to cut SO2 emissions by 73% by 2018.
Contradiction: There is a goal to cut CO2 emissions by 50% by 2018.