If in the left image a monster bus is driving over another vehicle.
return left image ;return monster bus in  #1 ;return vehicles in  #1 ;return #3 besides  #2 ;return #2 that is driving over #4 ;return number of  #5 ;return if  #6 is at least one
['select', 'project', 'project', 'discard', 'filter', 'aggregate', 'boolean']