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: Jeb wanted to make the football team. Sentence2: He practiced every day. Sentence3: He ran as fast as he could. Sentence4: He could catch well. Sentence5: He made the team and was happy!

Output: Jeb

Input: Consider Input: Sentence1: Every Saturday night my friends go bowling. Sentence2: Last week they invited me. Sentence3: I was so excited to go bowling with them. Sentence4: When we went bowling I did not do very well. Sentence5: Even though I didn't bowl well I had a lot of fun with my friends.

Output: I (myself), Friends

Input: Consider Input: Sentence1: I always hated secret santa. Sentence2: I never knew what was cool to by a complete stranger. Sentence3: In fourth grade I got a boy named Gabriel, who I had never spoken to. Sentence4: I bought him an Usher album. Sentence5: Turned out he didn't even speak English.
Output: I (myself), Gabriel, Usher, Stranger