If there are two bottles, and only one of them has a pump.
return bottles ;return pump ;return #1 that has #2 ;return number of  #1 ;return number of  #3 ;return if  #4 is equal to  two ;return if  #5 is equal to  one ;return if  both  #6 and #7 are true
['select', 'select', 'filter', 'aggregate', 'aggregate', 'boolean', 'boolean', 'boolean']