Given the task definition and input, reply with output. 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: Brad always wanted to ride his bike through his city. Sentence2: So he was glad about the new bike path that was built. Sentence3: One morning, he planned to ride his bike to the mall. Sentence4: Instead he went all the way to the end of the bike path and back home. Sentence5: The beautiful bike path inspired Brad to ride his bike all day.
Mall, Brad