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: Alec didn't like the fall. Sentence2: Every year tons of leaves would fall on his yard. Sentence3: It would be his job to rake them. Sentence4: This year was no exception. Sentence5: The only difference was that it keeps becoming easier as he grows.
Output:
Alec