If the combined images contain four pillows, with at least two of them square.
return images ;return pillows in  #1 ;return #2 that are square ;return number of  #2 ;return number of  #3 ;return if  #4 is equal to  four ;return if  #5 is at least two ;return if  both  #6 and #7 are true
['select', 'project', 'filter', 'aggregate', 'aggregate', 'boolean', 'boolean', 'boolean']