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: Nancy tried to get some lunch before her next class starts. Sentence2: Although she had the opportunity to eat, she caught a stomach ache. Sentence3: It gave her a lot of pain to the extent where she can barely walk. Sentence4: Instead of going to her class, she tried to call her mom. Sentence5: Her mom got out of work to pick her up.
Output:
Nancy, Nancy's mom