Q: 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.
Sentence1: Marley checked in at the construction site for his shift. Sentence2: He strolled in confidently and waved to his co-workers. Sentence3: His supervisor, Harry asked him if he was forgetting anything. Sentence4: Marley smiled and shook his head. Sentence5: Harry then handed Marley his hard hat.
A:
Supervisor, Marley, Co-workers, Harry