Task: Question Generation
Input (English): #1 return water buffalo 
#2 return street 
#3 return buildings 
#4 return #2 that is  lined with  #3 
#5 return #1 that are  walking rightward down #4 
#6 return If #5 is  in  at least one image
Output (English): If in at least one image, water buffalo are walking rightward down a street lined with buildings.