If the left and right image contains the same number of sailboats with a dark open sails.
return sailboats ;return open sails ;return #2 that are dark ;return #1 with #3 ;return left image ;return right image ;return #4 in  #5 ;return number of #7 ;return #4 in  #6 ;return number of #9 ;return if  #8 is equal to  #10
['select', 'select', 'filter', 'filter', 'select', 'select', 'filter', 'aggregate', 'filter', 'aggregate', 'boolean']