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: I was playing baseball in the park with friends. Sentence2: Too many people kept cutting through the field. Sentence3: We were so annoyed that we stopped playing. Sentence4: I randomly started walking through the trees at the edge of the park. Sentence5: I stumbled upon a huge secret field where we could play in peace.
Output:
I (myself), Many people, Friends