If there appear to be fewer than four people on each boat.
return boats ;return people ;return number of  #2 for each  #1 ;return #1 where  #3 is lower than four ;return number of  #1 ;return number of  #4 ;return if  #5 is equal to  #6
['select', 'select', 'group', 'comparative', 'aggregate', 'aggregate', 'boolean']