Task: Question Generation
Input (English): #1 return aircrafts 
#2 return distances of  #1 
#3 return #1 where #2 is  at least 1000 
#4 return #1 where #2 is  at most 5000 
#5 return #1 of  both #3 and  #4 
#6 return number of  #5
Output (English): How many aircrafts have distance between 1000 and 5000?