Conversation so far:
who has run the mile under 4 minutes
Helped by two pacemakers, Roger Bannister clocked 3 minutes, 59.4 seconds over four laps at Oxford’s Iffley Road track on May 6, 1954, to break the 4-minute mile.

Question: How old was the athlete at the time
Self-contained rewrite: How old was Roger Bannister at the time