Task: Question Generation
Input (English): #1 return departments 
#2 return students of  #1 
#3 return gpas of  #2 
#4 return max of  #3 for each  #1 
#5 return average of  #3 for each  #1 
#6 return minimum of  #3 for each  #1 
#7 return #4 ,  #5 ,   #6
Output (English): Find the max, average, and minimum gpa of all students in each department.