Task: Question Decomposition
Input (English): question: If one of the sleds features a single rider.
Output (English): #1 return sled 
#2 return rider 
#3 return number of  #2 for each  #1 
#4 return #1 where  #3 is equal to  one 
#5 return number of  #4 
#6 return if  #5 is equal to  one