I want to know the answer to the following question:
How old was John XXIII upon his death?
All the background I'm provided with is that "John XXIII died of peritonitis caused by a perforated stomach at 19:49 local time on 3 June 1963 at the age of 81, ending a historic pontificate of four years and seven months.". Is that enough to answer the question?
Answer: yes