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: The man turned on the light. Sentence2: A mouse got startled. Sentence3: The mouse ran across the living room. Sentence4: The man got startled. Sentence5: The man hid in his room.

Ex Output:
The man, A mouse

Ex Input:
Sentence1: The announcer called out Fran's name. Sentence2: She walked her lamb, Edna, into the small arena. Sentence3: Edna's white coat looked like a giant cotton ball. Sentence4: Fran stopped walking allowing the judges to look over Edna. Sentence5: After the judges handed in their scorecards, Fran exited the arena.

Ex Output:
Announcer, Fran, Edna, Judges

Ex Input:
Sentence1: Tina decided she wanted to learn to cook. Sentence2: She loved sushi, so she would start with that. Sentence3: She tried to make a few different rolls. Sentence4: It was so hard! Sentence5: She decided to go to a sushi restaurant and order instead.

Ex Output:
Tina