If these dogs are all weaing pack equipment  to carry gear.
return dogs ;return pack equipment ;return gear ;return #2 that is to  carry #3 ;return #1 that are weaing #4 ;return number of  #1 ;return number of  #5 ;return if  #6 is equal to  #7
['select', 'select', 'select', 'filter', 'filter', 'aggregate', 'aggregate', 'boolean']