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: Consider Input: Sentence1: Suzanne had a Halloween party. Sentence2: She asked all of her guests to come in costume. Sentence3: She said that a prize would be given for the best costume. Sentence4: A boy named Dave came dressed as a girl. Sentence5: His costume was so convincing he won first prize in the contest.

Output: Dave, Suzanne, Guests

Input: Consider Input: Sentence1: Germaine was a scientist working on a secret NASA project. Sentence2: It was meant to help design a ship that could travel to Mars. Sentence3: He was really attracted to a pretty woman who was his colleague. Sentence4: They finally got together and became very intimate. Sentence5: Months later he learned she was a Russian spy and he was fired.

Output: Colleague, Germaine

Input: Consider Input: Sentence1: Before I go to bed, I clean up my sofa. Sentence2: I try to make sure nothing is on it. Sentence3: That involves folding my blanket if it has been used. Sentence4: My cat immediately jumps on the blanket after it is folded. Sentence5: It is my cat's favorite place to lay.
Output: I (myself), Cat