How many more troops did Howe have than Washington when they arrived in New York in July?
return Howe ;return Washington ;return troops when  they arrived in  New York in July of #1 ;return troops of #2 ;return number of  #3 ;return number of  #4 ;return the  difference of #5 and  #6
['select', 'select', 'project', 'project', 'aggregate', 'aggregate', 'arithmetic']