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.
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Question: Sentence1: The Greens live in Atlanta. Sentence2: Last week, they traveled to Canada. Sentence3: There was a lot of snow and ice. Sentence4: Wind chills were well below zero. Sentence5: The Greens are happy to be back in warm Atlanta!

Answer: Greens

Question: Sentence1: Shy was starting college. Sentence2: She was nervous but excited. Sentence3: She wondered if she would like her classes. Sentence4: On her first day, she met many new friends. Sentence5: Shy realized she would love college, after all!

Answer: Shy, Friends, College

Question: Sentence1: Sally wasn't feeling well. Sentence2: She had bronchitis and pneumonia. Sentence3: Her doctor prescribed her a strong medication. Sentence4: After a few days, Sally was feeling better. Sentence5: She had to take it easy for a week.

Answer:
Doctor, Sally