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: Jill had set a goal for herself in the seventh grade. Sentence2: She maintained the highest grades ever since then. Sentence3: She was determined to be valedictorian. Sentence4: When she became a senior, she still had that goal. Sentence5: At graduation, she met her goal and presented her speech.

Ex Output:
Jill

Ex Input:
Sentence1: Mark and Jim went out fishing so they could have something for dinner. Sentence2: The two worked hard but it was hot and there were no fish. Sentence3: Jim suggested trying a new spot in the shade. Sentence4: The new spot worked and they brought in half a dozen fish. Sentence5: That night they had a delicious meal they were proud of.

Ex Output:
Jim, Mark

Ex Input:
Sentence1: Emily wanted to cook the perfect dinner for her friends. Sentence2: She pulled out her favorite recipe book. Sentence3: She decided on poppyseed chicken. Sentence4: She followed the recipe. Sentence5: They loved it!

Ex Output:
Friends, Emily