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.
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Question: Sentence1: Tim was going to drive a friend home. Sentence2: The friend had too much to drink. Sentence3: He couldn't get the friend's keys to work. Sentence4: The friend was too drunk to help. Sentence5: He had taken the wrong keys by accident.

Answer: Tim, Friend

Question: Sentence1: Evan was bad at science. Sentence2: He tried his best, but it just made little sense to him. Sentence3: Still, he studied diligently. Sentence4: At the end-of-year commencement he was surprised to be called onstage. Sentence5: There, Evan was given an award for Most Improved Science Student!

Answer: Evan

Question: 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.

Answer:
Mike, Bea