If there are at least three vending machines that have food or drinks.
return vending machines ;return food ;return drinks ;return #1 that have #2 ;return #1 that have #3 ;return #4 , #5 ;return number of  #6 ;return if  #7 is at least three
['select', 'select', 'select', 'filter', 'filter', 'union', 'aggregate', 'boolean']