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: Sam wanted to volunteer somewhere. Sentence2: She was homeschooled and had free time during the day. Sentence3: One day she went for a bike ride. Sentence4: She saw a retirement home and stopped there. Sentence5: She began volunteering there the next day.
Output:
Sam