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: Jean had saved a file on her computer. Sentence2: She wanted to send it to her sister. Sentence3: Jean didn't remember what she had named the file. Sentence4: She couldn't find the location of the file. Sentence5: Jean couldn't send the file to her sister.
Output:
Jean