Instructions: 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: Kam wanted to meet up with her online friend. Sentence2: They arranged a date at a local park. Sentence3: Several days later, Kam arrived to the park. Sentence4: A strange man was walking close to her. Sentence5: He confessed about hiding his physical identity.
Output:
Friend, Kam, Man