Here's a short story:

Boxing was long viewed sickly. Generally forbidden by law in earlier days, the fighting was usually done with bare fists, and matches often lasted forty or fifty rounds. 

In 1882 John L. Sullivan, a fighter of great power, won the world heavyweight championship from Paddy Ryan in a bare fisted battle marked by hitting, scratching, and biting without any rule. Five years later, while fighting Patsy Cardiff at Minneapolis, Sullivan broke his right arm in the third round, but he continued fighting to the sixth round and won. In 1889, Sullivan defeated Jade Kilrain with his bare fists in another championship fight, winning twenty thousand dollars and a diamond prize medal. His admirers talked then of running him for the next governor, but he traveled to Australia for a boxing tour instead, coming back only to lose his title in a twenty-one-round match with a young Californian named James J. Corbett. 

"Gentleman James" victory in this match marked a turning point, for it showed scientific boxing was over strength. But Corbett's title ended in 1897, when another boxer, Bob Fitzsimmons, in less than three seconds, achieved his feats and then Fitzsimmons knocked out an Irishman, won the heavyweight championship of the world, and invented the terrible "solar plexus punch." (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: How was boxing viewed?
Guess: sickly

Question: Was it allowed by law?
Guess: no

Question: How many rounds do matches last?
Guess: forty or fifty

Question: Who won the 1882 world heavyweight championship?
Guess: John L. Sullivan

Question: What happened to Sullivan five years later?
Guess: he broke his right arm in a match

Question: Was he defeated?
Guess: no

Question: How did he fight?
Guess: with his bare fists

Now answer the following question in the same format.

Question: How much did he win?

twenty thousand dollars