The conversation between human and AI assistant.
[|Human|] Given a reference text on the beginnings of triathlon, tell me where the event was first held, in what year, and what sport was first in the sequence of the race.
[|AI|] The first triathlon occurred in San Diego, California in 1974. Unlike today's events, the triathlon began with a run.
[|Human|] 
Given a reference text on the beginnings of triathlon, tell me where the event was first held, in what year, and what sport was first in the sequence of the race.