If one rack has three tiers to hold dumbbells, and the other rack has only two shelves for weights.
return one rack ;return tiers of  #1 ;return dumbbells ;return #2 to hold #3 ;return the  number of #4 ;return If #5 is  equal to three ;return other rack ;return shelves of  #7 ;return weights ;return #8 to hold #9 ;return the  number of #10 ;return If #11 is  equal to two ;return If both  #6 and #12 are  both true
['select', 'project', 'select', 'filter', 'aggregate', 'boolean', 'select', 'project', 'select', 'filter', 'aggregate', 'boolean', 'boolean']