Question: In what year was the earlier of these two documentaries produced: The Life and Times of Hank Greenberg or Burden of Dreams?  
Sentence (from "The Life and Times of Hank Greenberg"): The Life and Times of Hank Greenberg is a 1998 documentary film directed, produced and written by Aviva Kempner about Hall of Fame first baseman Hank Greenberg of the Detroit Tigers.
Relevant evidence: Yes