Conversation so far:
How old was George Burns when George Burns died?
On March 9, 1996, 49 days after his centenary, Burns died in his Beverly Hills home at age 100.
Did he make any films during his final years?
CANNOTANSWER.
What did he do in his final years?
His final public appearance was in at the MCG in Melbourne, Australia, where he opened the 1996 AFL Premiership Season on February 8.
Did he make any other appearances before the one in Melbourne, Australia?
he had signed a lifetime contract with Caesar's Palace in Las Vegas to perform stand-up comedy there, which included the guarantee of a show on his centenary.
Did he perform with any other comedians?
CANNOTANSWER.
Are there any other interesting facts?
Burns remained in good health for most of his life, in part thanks to a daily exercise regimen of swimming, walks, sit-ups, and push-ups.

Question: What was his cause of death?
Self-contained rewrite: What was George Burn's cause of death?