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: Terry was going through a big issue. Sentence2: He started questioning everything around him. Sentence3: He started believing that he is the only one who exists. Sentence4: No matter how his friends and family tried to convince him he wasn't. Sentence5: He never would budge.

Ex Output:
Friends, Family, Terry

Ex Input:
Sentence1: The family decided to go on a picnic. Sentence2: They packed a big lunch to take with them. Sentence3: When they got to the park, mom went to get the lunch. Sentence4: They had left the lunch at home. Sentence5: They went out to eat instead.

Ex Output:
Went, Family, Mom

Ex Input:
Sentence1: I filled my car with one tank of gas. Sentence2: I drove as far as I could before the fuel ran out. Sentence3: The car coasted to a stop on the side of the road. Sentence4: I got out of my car and threw the keys on the ground. Sentence5: I walked from the car and didn't look back.

Ex Output:
I (myself)