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: Jackson decides to watch a professional baseball game. Sentence2: During the game he begins to feel hungry. Sentence3: He eats a hotdog and drinks a beer. Sentence4: After eating he feels too sleepy to watch the game. Sentence5: He goes home to nap before the game is half over.
Jackson