Task: Question Generation
Input (English): #1 return grades 
#2 return classrooms of  #1 
#3 return number of #2 for each #1 
#4 return students of  #1 
#5 return number of #4 for each #1 
#6 return #1 ,   #3 , #5
Output (English): For each grade, report the grade, the number of classrooms in which it is taught and the total number of students in the grade.