At which restaurant did the students spend the least amount of time? List restaurant and the time students spent on in total.
return restaurants ;return time students  spent in #1 ;return sum of  #2 for each  #1 ;return #1 where #3 is  highest ;return time students  spent in #4 ;return sum of  #5 ;return #4 ,  #6
['select', 'project', 'group', 'superlative', 'project', 'aggregate', 'union']