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: Harry woke up with a sore throat. Sentence2: And he searched the Internet for possible causes. Sentence3: The whole day he thought about his throat. Sentence4: And he tried to pay attention to any small changes. Sentence5: But his obsession created stress, making him more sick.
A:
Harry