If there are men in black vests working on a customer in a barber chair.
return men ;return vests ;return #2 that are black ;return #1 in  #3 ;return customer ;return barber chair ;return #5 in  #6 ;return if  #4 are working on #7
['select', 'select', 'filter', 'filter', 'select', 'select', 'filter', 'boolean']