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 there was a lake near my house. Sentence2: Every afternoon I would go outside and throw rocks into the lake. Sentence3: Sometimes there would be ducks in the lake. Sentence4: My parents would always tell me to be careful and not hit the ducks. Sentence5: I really miss living by that lake and seeing those ducks!
Output:
I (myself), My parents, Ducks