How many points did the Ravens lose by against the Bengals on September 7?
return the  Ravens ;return the  Bengals ;return points of #1 ;return points of #2 ;return #3 on September 7 ;return #4 on September 7 ;return the  difference of #6 and  #5
['select', 'select', 'project', 'project', 'filter', 'filter', 'arithmetic']