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: Jane decided to take a trip to the Caribbean. Sentence2: While on her trip, Jane was bitten by a mosquito. Sentence3: Jane started to feel ill after being bitten. Sentence4: Jane went to the hospital upon her return home. Sentence5: Jane was diagnosed with the Zika virus.

Ex Output:
Jane, Mosquito

Ex Input:
Sentence1: Evelyn moved away to college on her own. Sentence2: She felt very homesick and missed her friends. Sentence3: Eventually, she decided to join a student organization. Sentence4: She met a lot of people and made a few friends. Sentence5: Evelyn didn't feel so homesick any more.

Ex Output:
Evelyn, Friends

Ex Input:
Sentence1: Neil's train arrived in Burundi. Sentence2: He taxied to his hotel and checked in. Sentence3: Then he set off on foot to explore the African land. Sentence4: He met so many friendly locals. Sentence5: Neil decided Burundi had the friendliest people on earth!

Ex Output:
Neil, Locals