Task: Question Decomposition
Input (English): question: Which report came out first, Du et al. or Knight et al.?
Output (English): #1 return the  Du et al  report came out 
#2 return the  Knight et al  report came out 
#3 return when  was  #1 
#4 return when  was  #2 
#5 return which is the  lowest of #3 ,  #4