Q: 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: Meg put on ten pounds during her luxury vacation. Sentence2: She wasn't certain what the best way was, to take the weight off. Sentence3: She asked her doctor, who gave her a diet to follow. Sentence4: Her doctor also gave her exercise recommendations. Sentence5: Meg followed the diet, and also exercised, and lost the excess pounds!
A:
Meg, Doctor