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.
Q: Sentence1: Julia was looking for her very favorite blouse. Sentence2: When she didn't find it she went to ask her sister. Sentence3: To her surprise her sister was wearing the shirt. Sentence4: She refused to take it off and Julia attacked her. Sentence5: Their dad broke it up and took the shirt away for good.
A:
Dad, Sister, Julia