Are most the objects made of the same material?
return objects ;return number of  #1 for each material ;return #1 where #2 is  highest ;return #1 besides #3 ;return number of  #4 ;return number of  #3 ;return is  #6 higher than #5
['select', 'group', 'superlative', 'discard', 'aggregate', 'aggregate', 'boolean']