question_text: Which author lived longer, Nelson Algren or Nathanael West?
decomposition: return when  the  author Nelson Algren lived ;return when  the  author Nathanael West lived ;return the  highest of #1 ;return the  lowest of #1 ;return the  highest of #2 ;return the  lowest of #2 ;return the  difference of #3 and  #4 ;return the  difference of #5 and  #6 ;return which is the  highest of #7 ,  #8