Task: Question Generation
Input (English): #1 return tracks 
#2 return seating of #1 
#3 return #1 where #2 is  at least 5000 
#4 return #1 where #2 is  at most 4000 
#5 return #3 ,  #4 
#6 return year opened of #5
Output (English): Show year where a track with a seating at least 5000 opened and a track with seating no more than 4000 opened.