Question: In regards to the athlete born on September 18, 1971, who directed a documentary about him in 2013?
Sentence (from "Billy Sherring"): William John "Billy" Sherring (September 18, 1877 – September 5, 1964) was a Canadian athlete of English and Irish descent, winner of the marathon race at the 1906 Intercalated Games (or 1906 Olympic Games, as they were at the time considered to be).
Relevant evidence: No