<prompt> Translate the following text to EnglishKupunguza uzalishaji wa dioksidi ya sulfuri SO2 kwa asilimia 73 kutoka uzalishaji wa sasa wa tani milioni 11 hadi kiwango cha juu cha tani milioni 4.5 mnamo 2010 na tani milioni 3 mnamo 2018.  <response>: 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. 