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.

Example Input: Sentence1: Katelyn was so excited. Sentence2: Today was the day her husband Peter was coming home. Sentence3: He'd been away at war for the past eighteen months. Sentence4: She drove to the airport to pick him up. Sentence5: They were reunited and greeted each other with a kiss.
Example Output: Peter, Katelyn

Example Input: Sentence1: Lou's dad went fishing with his friends one Saturday a month. Sentence2: Lou always asked to go along but his dad said he was too little. Sentence3: Then one day, Lou's dad said he could go! Sentence4: He and his dad went out on a boat with fishing poles. Sentence5: He was very excited when he caught his first fish that day.
Example Output: His dad, Friends, Lou

Example Input: Sentence1: We had a heat wave in Boston this week. Sentence2: I had been reading outdoors wearing shorts. Sentence3: Today it rained and the temperature dropped to seventy. Sentence4: I wore long pants and went out, just as the weather cleared. Sentence5: It got up to eighty and I changed back into shorts.
Example Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
I (myself)

