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.

Ex Input:
Sentence1: A strange lady walked into the club. Sentence2: She flirted with any man in sight and was asking for free drinks. Sentence3: Due to her behavior, the security guards came. Sentence4: They escorted her to the front of the club. Sentence5: She tried fighting back but she couldn't get inside the club again.

Ex Output:
Security guards, Strange lady, Any man

Ex Input:
Sentence1: Ruth was visiting her grandfather's farm. Sentence2: She liked animals but the tall horses scared her. Sentence3: Ruth's grandpa brought her to one of the horses. Sentence4: He showed Ruth that the horse was kind and gentle. Sentence5: Soon Ruth felt much less scared and calmed down.

Ex Output:
Ruth, Grandpa

Ex Input:
Sentence1: Last week I had an interview. Sentence2: I was supposed to be there at ten in the morning. Sentence3: When I entered there, I got a dirty look. Sentence4: I realized I was an hour late. Sentence5: The boss was not thrilled.

Ex Output:
Boss, I (myself)