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: Sandy's mom packed her a ham sandwich for lunch again. Sentence2: Frannie had a cheese sandwich that looked much better. Sentence3: She offered to trade her sandwich for Frannie's. Sentence4: Frannie agreed and they swapped. Sentence5: The were both happy with the trade.
Output:
Sandy's mom, Frannie, Sandy, Were