Definition: 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: Sentence1: Sam really wanted to start a restaurant. Sentence2: He saved up money from his current job. Sentence3: He was able to get a nice location in the downtown area of his city. Sentence4: His restaurant became an overnight success. Sentence5: Sam eventually quit his job to run his restaurant business.
Output:
Sam