You will be given a definition of a task first, then some input of the task.
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: Mark was going to his brother's wedding. Sentence2: He needed a suit but he was broke. Sentence3: He gathered what little money he did and shopped for a cheap suit. Sentence4: Luckily he found one just in time, but it didn't fit well. Sentence5: The bride hated it and had her mother, a seamstress, fix it.
Output:
Bride, His brother, Mother, Mark