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.
--------
Question: Sentence1: Ken was a cook. Sentence2: Ken was given an order for a medium rare steak. Sentence3: Ken cooked up the steak nice and rare. Sentence4: He went to serve it to the customers. Sentence5: The customer told him they wanted it well done.

Answer: Customer, Ken, Customers

Question: Sentence1: I have never been hunting before. Sentence2: I would not even know where to begin. Sentence3: I would like to go one day. Sentence4: It would be fun to come back with a win. Sentence5: Perhaps I will go next season.

Answer: I (myself)

Question: Sentence1: Tim woke up with a headache. Sentence2: He drank some water, but couldn't find the asperin. Sentence3: It wasn't in his medicine cabinet. Sentence4: He remembered he had a travel sized pack in his travel bag. Sentence5: He took some aspirin and his headache went away.

Answer:
Tim