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: Jenny was afraid to sit on Santa's lap. Sentence2: She clung to her mother and refused to climb on the stage. Sentence3: When Santa swayed a lollipop, she changed her mind. Sentence4: She run on his lap and grabbed the sweet. Sentence5: She then told him all she wanted for Christmas.
Output:
Jenny, Santa, Her mother