Conversation so far:
Was Joe Louis married?
Joe Louis had married Marva Trotter at a friend's apartment and was eager to end the fight in order to consummate the relationship.
What were some of the names of Joe Louis's wives?
Joe Louis had married Marva Trotter, Rose Morgan, and Martha Jefferson.
Did Joe Louis have any children?
Joe Louis had two sons and a daughter: Joe Louis Barrow Jr., Joseph Louis Barrow Jr., and Jacqueline Barrow.
What year did Joe Louis die?
Joe Louis died April 12, 1981.
Where was Joe Louis at his time of death?
Joe Louis died of cardiac arrest in Desert Springs Hospital near Las Vegas on April 12, 1981.

Question: What happened?
Self-contained rewrite: How did Joe Louis die?