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: My friend Tommy does not like condoms. Sentence2: He claimed he knew his girlfriends were safe. Sentence3: One day he had sex with a person he had just met. Sentence4: I told him he was foolish, and could catch AIDS. Sentence5: Luckily, he did not get AIDS.
Output:
I (myself), Person, Girlfriends, Tommy