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: It was 4 AM. Sentence2: Amy, Kim and Lynn had been up all night. Sentence3: They had an evening full of adventure. Sentence4: And they were still wide awake. Sentence5: Amy realized it was probably the adrenaline making them so alert.
Output:
Amy, Lynn, Kim