Definition: 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.
Input: Sentence1: Caleb went to the movies. Sentence2: He bought a ticket to a comedy movie and got a tub of popcorn. Sentence3: Caleb found a seat and got ready to watch the film. Sentence4: The film was boring and not funny at all. Sentence5: Caleb fell asleep watching the movie.
Output:
Caleb