How many more seats did the Woolrich Empire seat than The Grand Theatre?
return the  Woolrich Empire ;return The Grand Theatre ;return seats of #1 ;return seats of #2 ;return number of  #3 ;return number of  #4 ;return the  difference of #5 and  #6
['select', 'select', 'project', 'project', 'aggregate', 'aggregate', 'arithmetic']