Task: Question Generation
Input (English): #1 return railings 
#2 return #1 that are  vertical 
#3 return #2 that are  plain with  no design 
#4 return sets of  #3 
#5 return number of #4 
#6 return if #5 is  equal to one
Output (English): If one set of vertical railings is plain with no design.