In the United States, about 67 percent of annual SO2 emissions and 25 percent of NOx emissions are produced by electric utility plants that burn fossil fuels.
In the United States, all SO2 emissions come from fossil fuels.
mnli hypothesis: In the United States, all SO2 emissions come from fossil fuels. premise: In the United States, about 67 percent of annual SO2 emissions and 25 percent of NOx emissions are produced by electric utility plants that burn fossil fuels.