How many points did Hewitt lose by Russell in the second set?
return Hewitt ;return Russell ;return points of #1 ;return points of #2 ;return #3 in  the  second set ;return #4 in  the  second set ;return the  difference of #6 and  #5
['select', 'select', 'project', 'project', 'filter', 'filter', 'arithmetic']