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: When I was a kid, my mom and dad divorced. Sentence2: After the divorce, my mom wouldn't let me see my dad. Sentence3: When I got older, my dad contacted me. Sentence4: He wanted to have lunch and talk. Sentence5: I showed up, but he did not show up that day.
Output:
Dad, I (myself), Mom, Kid