is the tallest thing the same shape or color as the shortest thing?
return things ;return the  tallest of #1 ;return the  shortest of #1 ;return shape of #2 ;return shape of #3 ;return color of #2 ;return color of #3 ;return if #4 is the  same as #5 ;return if #6 is the  same as #7 ;return #8 ,  #9
['select', 'project', 'aggregate', 'project', 'project', 'project', 'project', 'boolean', 'boolean', 'union']