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: Rosa was making s'mores. Sentence2: She applied her marshmallow to her stick, then held it out. Sentence3: The fire made it gooey, then she applied chocolate pieces. Sentence4: Finally she sandwiched it between a graham cracker. Sentence5: Finally it was time for Rosa to enjoy her s'mores!
Output:
Rosa