If there are only two balloons and they are both upright.
return balloons ;return #1 that are  upright ;return number of #1 ;return number of #2 ;return If #3 is  equal to two ;return If #3 is  equal to #4 ;return If both  #5 and #6 are  true
['select', 'filter', 'aggregate', 'aggregate', 'boolean', 'boolean', 'boolean']