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: Steve was very nervous to ask Tina out on a date. Sentence2: Steve had liked Tina for months now, but they never really spoke. Sentence3: Steve got encouragement from his friends to ask her to hang out. Sentence4: Steve gathered courage and asked Tina to study together that night. Sentence5: Tina said yes and soon they started dating each other!

Ex Output:
Steve, Friends, Tina


Ex Input:
Sentence1: It was time for Nita's annual performance review. Sentence2: She was very nervous! Sentence3: Her boss called her into his office. Sentence4: Then he told Nita her performance was great this year! Sentence5: He even gave Nita a small raise.

Ex Output:
Nita, Boss


Ex Input:
Sentence1: Sandy and Syd were best friends since kindergarten. Sentence2: While Sandy remained plain looking, Syd blossomed. Sentence3: Syd got the attention of boys, who ignored Sandy. Sentence4: Sandy started spreading rumors about Syd. Sentence5: When Syd cried to her about the gossip, Sandy acted concerned.

Ex Output:

Boys, Friends, Sandy, Syd


