There's an object sitting between the two shiny cubes. Is it the only one of its color?
return cubes ;return #1 that  are shiny ;return objects ;return #3 sitting between two #2 ;return the  color of #4 ;return the  color of #3 ;return #3 where #6 is  the  same as #5 ;return the  number of  #7 ;return is  #8 equal to  one
['select', 'filter', 'select', 'filter', 'project', 'project', 'comparative', 'aggregate', 'boolean']