Detailed Instructions: 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: Fred has had the same winter hat for many Year's. Sentence2: Although its red color is fading, he loves his hat. Sentence3: One day, in a rush, he forgets his hat on the subway. Sentence4: Fred's wife buys him a new red hat. Sentence5: Although he is thankful, he knows it will never replace his old hat.
A:
Fred's wife, Fred