You will be given a definition of a task first, then some input of the task.
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.

Sentence1: In 2013, my wife went to the Big E in Springfield, MA. Sentence2: She had never gone before, and went with her sister. Sentence3: Her niece was in a horse competition. Sentence4: Her niece did not win, but everyone had a good time. Sentence5: My wife came home tired but happy.
Output:
I (myself), Sister, Niece, Wife