Task: Question Generation
Input (English): #1 return flights 
#2 return cities #1 are  landing in 
#3 return #1 where #2 is  Aberdeen 
#4 return #1 where #2 is  Abilene 
#5 return #3 or  #4 
#6 return number of  #5
Output (English): Find the number of flights landing in the city of Aberdeen or Abilene.