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: There was the start of mildew on the shower walls. Sentence2: A stack of laundry was growing out of control in the corner. Sentence3: Mary was excited that it was Friday night, so she was able to clean. Sentence4: Mary filled the washer with the towels. Sentence5: Mary set a toothbrush and bottle of bleach along the edge of the tub.
Mary