If the right image features a staircase with a curved wood rail, and the left image features a staircase with a right-angle turn.
return staircase  ;return #1 with  a    curved wood rail ;return #1 with  a    right-angle turn ;return if  #2 is  in  the  right image ;return if  #3 is  in  the  left image ;return if  both  #4 and #5 are  true
['select', 'filter', 'filter', 'boolean', 'boolean', 'boolean']