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.

Ex Input:
Sentence1: I made a grilled cheese sandwich. Sentence2: I decided to spice it up with some garlic. Sentence3: The garlic was so strong that it ruined the sandwich. Sentence4: I threw it in the garbage. Sentence5: Luckily, the mice in my kitchen found it delicious.

Ex Output:
I (myself)

Ex Input:
Sentence1: Carey was very excited to be going to prom with Joe. Sentence2: He was normally a gentleman but he was drinking that night. Sentence3: Carey felt very uncomfortable and asked to go home. Sentence4: Joe got very upset and almost hit her in the face. Sentence5: Carey broke up with Joe the next day and felt good for being strong.

Ex Output:
Carey, Joe

Ex Input:
Sentence1: Fred wanted to try the Paleo diet. Sentence2: It was all the rage. Sentence3: He thought it would be good. Sentence4: But after one day he quit. Sentence5: It was too hard to not eat bread.

Ex Output:
Fred