Q: In this task, you're given a story (which contains five sentences only). Your task is to find all the characters which are available in the given story.
Sentence1: Gary entered his first chess tournament last week. Sentence2: He was intimidated by the big names of some of the participants. Sentence3: He lost his focus and lost the first two game. Sentence4: His coach told him to focus on the chess board and not on the player. Sentence5: Gary took his coach's advice and won all the remaining games.
A:
Participants, Coach, Gary