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: Carol went shopping in town and parked in the town center. Sentence2: When she finished shopping, Carol returned to her car and headed home. Sentence3: She didn't realize it but a swarm of 20,000 bees followed her. Sentence4: Passerby's alerted the police and experts were called in. Sentence5: Beekeepers said the bees were trying to rescue their queen.
Carol, Police, Beekeepers