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.
Q: Sentence1: Jake went to make breakfast. Sentence2: He poured out all his cereal. Sentence3: When he went to pour milk nothing came out. Sentence4: He looked at it to see the problem. Sentence5: It was so old that a chunk had clogged it.
A:
Jake