Conversation so far:
What did Dante Lavelli do later in life?
After retiring from football, Dante Lavelli ran an appliance business on Cleveland's west side.
How long did Dante Lavelli run an appliance business on Cleveland's west side?
When did Dante Lavelli die?
Dante Lavelli died in 2009 at 85.

Question: How did he die?
Self-contained rewrite: How did Dante Lavelli die?