If all the tongs are black and sliver.
return tongs ;return #1 that are  black ;return #1 that are  sliver ;return number of #1 ;return number of #2 ;return number of #3 ;return sum of  #5 and #6 ;return If #4 is  equal to #7
['select', 'filter', 'filter', 'aggregate', 'aggregate', 'aggregate', 'arithmetic', 'boolean']