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: Tommy wanted to fix the scratches on his car. Sentence2: The scratches came from a curb he missed last week. Sentence3: He bought some car paint from his local auto store. Sentence4: He spent a weekend covering the scratches on his car. Sentence5: Tommy's car looks brand new now.

Ex Output:
Tommy

Ex Input:
Sentence1: I had a final exam. Sentence2: I decided to not go. Sentence3: My grade was high enough that I could skip the exam. Sentence4: Alas, I didn't read the syllabus correct. Sentence5: I failed the class because the final was worth more than I thought.

Ex Output:
I (myself)

Ex Input:
Sentence1: Kendall was heading over to the movie theater. Sentence2: He was very excited to see the new Star Wars movie. Sentence3: At the theater he found out he didn't have enough money. Sentence4: Someone behind him offered to purchase his ticket. Sentence5: Kendall was so happy that a stranger would be so kind.

Ex Output:
Kendall, Someone