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.
Q: Sentence1: Bob was hiking in the forest. Sentence2: Bob was stung by an angry bee. Sentence3: Bob was allergic to bees. Sentence4: Bob immediately hiked out of the woods. Sentence5: Bob went to the emergency room to get treated.
A:
Bob