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: John was driving to work early one morning. Sentence2: He was taking the usual route that he knew well. Sentence3: He felt comfortable, so he began browsing through his phone. Sentence4: Suddenly, he blew a stop sign a careened off the road. Sentence5: He realized that using his phone while driving can mean real danger.
A:
John