If there is a stone wall in front of the building in one image, but no stone wall in front of the other.
return one image ;return the  building in   #1 ;return stone wall  in   #1 ;return if  #3 is in   front  of #2 ;return the  other image ;return the  building in   #5 ;return stone wall  in   #5 ;return if  #7 is not in   front  of #6 ;return if  both  #4 and #8 are true
['select', 'project', 'project', 'boolean', 'select', 'project', 'project', 'boolean', 'boolean']