How many field goals measured between 30-yards and 40-yards in length?
return field goals ;return lengths of #1 ;return #1 where #2 is at least 30-yards ;return #1 where #2 is at most 40-yards ;return #1 in  both #3 and  #4 ;return number of  #5
['select', 'project', 'comparative', 'comparative', 'intersection', 'aggregate']