How many more wins than loses did the Redskins have in the 1991-1992 NFL season?
return the  Redskins ;return wins of #1 ;return #2 in  the  1991-1992 NFL season ;return loses of #1 ;return #2 in  the  1991-1992 NFL season ;return number of  #3 ;return number of  #5 ;return difference of #6 and  #7
['select', 'project', 'filter', 'project', 'filter', 'aggregate', 'aggregate', 'arithmetic']