What are the balances of checking accounts belonging to people with savings balances greater than the average savings balance?
return people ;return savings balances of #1 ;return the  average of #2 ;return #1 where #2 is  greater than  #3 ;return checking accounts belonging to  #4 ;return balances of #5
['select', 'project', 'aggregate', 'comparative', 'project', 'project']