How many other objects are made from the same type of material as the object that is the most far in the back?
return objects ;return #1 that  is  most far in the   back ;return material of #1 ;return material of #2 ;return #1 where #3 is  the   same as #4 ;return number of  #5
['select', 'filter', 'project', 'project', 'comparative', 'aggregate']