Definition: 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: My son has been asking me for a new dog for weeks. Sentence2: I finally decided to say yes to the idea. Sentence3: We went to the local pet store and bought a boxer. Sentence4: The dog is full of energy and needs walked every day. Sentence5: My son loves taking his dogs on walks and I am glad we got him.
Output:
I (myself), Son, A boxer, Dogs, Dog