Detailed Instructions: 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: Romeo thought he was the fastest kid at school. Sentence2: Romeo challenged his friend to a race on the track. Sentence3: Both of the racers lined up and prepared to take off! Sentence4: However, Romeo's foot slipped and he ended up tripping himself! Sentence5: He skinned his knee badly and was taken away to the nurse.
A:
Racers, Friend, Romeo