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: Aya was going on her first plane ride. Sentence2: She was heading to her first job in Japan. Sentence3: She was afraid at first. Sentence4: But when she got on the plane she was pleasantly surprised. Sentence5: Flying, she found, was actually delightful!

Ex Output:
Aya

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: James lives in Texas. Sentence2: Texas is prone to tornados. Sentence3: James prepared for this. Sentence4: He bought a tornado shelter. Sentence5: So when a tornado strikes he will be safe.

Ex Output:
James