Conversation so far:
What happened during Oscar Charleston's early years that was significant?
After his honorable discharge from the U.S. Army in 1915, Oscar Charleston returned to the United States and immediately began his baseball career with the Indianapolis ABCs.
How long did Oscar Charleston stay with the Indianapolis team?
Oscar Charleston stayed with the Indianapolis ABCs from 1915 until 1918.

Question: How long did he stay in Cuba?
Self-contained rewrite: How long did Oscar Charleston stay in Cuba?