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: Bea yelled out that the computer was broken again. Sentence2: Mike walked into their shared office and looked at her, exasperated. Sentence3: Mike rolled his eyes. Sentence4: He approached Bea and the computer, sighing a long suffering sigh. Sentence5: Mike switched on the computer monitor.
A:
Mike, Bea