Q: 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.
Sentence1: Sean went to a concert. Sentence2: He ran into the restroom between songs. Sentence3: There was a long line to use the restroom. Sentence4: Sean exited the restroom and returned to his seat. Sentence5: He had missed his favorite song.
A:
Sean