Definition: 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.
Input: Sentence1: Tom went to his friend's house. Sentence2: He got a gatorade bottle off the ground. Sentence3: Tom drank it without thinking. Sentence4: The liquid was disgusting and he spat it out. Sentence5: Tom's friend told him it wasn't Gatorade.
Output:
His friend, Tom