Given the task definition and input, reply with output. 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: Anna whined a lot. Sentence2: Her family told her it was very annoying. Sentence3: Ana decided to try to stop whining so much. Sentence4: She consciously paid attention to her whining urges. Sentence5: Soon she had stopped whining, and her family was very happy!
Family, Anna