Conversation so far:
When was Man o'War born?
CANNOTANSWER.
Who was his owner?
Belmont Jr.
How many races did he run?
CANNOTANSWER.
What kind of horse is it?
Belmont Stakes.
Did it have famous parents?
Belmont Jr.
was an equally notable horseman who served as the chairman of The Jockey Club from 1895.

Question: What is interesting about its background?
Self-contained rewrite: What is interesting about Belmont Jrs. background?