If there is a four legged chair at each of the white desk areas.
return white desk areas ;return chairs ;return #2 that are  four legged ;return #3 that are  at #1 ;return number of #1 ;return number of #4 ;return if  #6 is  equal to #5
['select', 'select', 'filter', 'filter', 'aggregate', 'aggregate', 'boolean']