If there are 3 pencil cases that are at least 2 different colors.
return pencil cases ;return number of  #1 ;return if  #2 is equal to  3 ;return different colors of #1 ;return number of  #4 ;return if  #5 is at least two ;return if  both  #3 and #6 are true
['select', 'aggregate', 'boolean', 'project', 'aggregate', 'boolean', 'boolean']