How many more percent of Armenians approved of U.S. leadership than disapproved?
return Armenians ;return #1 that approved of U.S. leadership ;return #1 that disapproved of U.S. leadership ;return percent of #2 ;return percent of #3 ;return the  difference of #4 and  #5
['select', 'filter', 'filter', 'project', 'project', 'arithmetic']