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: Nina was at the skating rink. Sentence2: A girl walked past and shouted something rude. Sentence3: When Nina confronted her, she became even meaner. Sentence4: Nina was so upset, she didn't know what to do. Sentence5: Luckily, the girl left.
A:
Nina, Girl