Which colleges have both authors with submission score above 90 and authors with submission score below 80?
return colleges ;return authors of  #1 ;return submission scores of  #2 ;return #1 where #3 is  higher than 90 ;return #1 where #3 is  lower than 80 ;return #1 of  both #4 and  #5
['select', 'project', 'project', 'comparative', 'comparative', 'intersection']