Conversation so far:
When was Jimmy born?
CANNOTANSWER.
Was Jimmy ever married?
Fallon married film producer Nancy Juvonen.
When did he get married?
December 22, 2007.
Does he have any children?
They have two daughters.
What are their names?
CANNOTANSWER.
What are his personal interests?
On June 26, 2015, Fallon suffered a ring avulsion.

Question: What caused that?
Self-contained rewrite: What caused Jimmy Fallon to suffer a ring avulsion?