If to the right, we see a blue sky, with no clouds, behind the building.
return building ;return #1 to the  right ;return sky ;return #3 behind #2 ;return if  #4 is  blue ;return clouds of  #4 ;return number of #6 ;return if  #7 is  equal to zero ;return if  both  #5 and #8 are  true
['select', 'filter', 'select', 'filter', 'boolean', 'project', 'aggregate', 'boolean', 'boolean']