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: 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.
Racers, Friend, Romeo

Sentence1: Alex was at the lake with his family. Sentence2: Some of the people were out on a boat. Sentence3: Suddenly an intense storm came rolling in. Sentence4: Everyone was worried about the people in the boat. Sentence5: Luckily, they had stopped on a beach and kept themselves safe.
Some of the people, His family, Alex

Sentence1: Janet's cat really liked being around her. Sentence2: He would jump on the bed and try to sleep on her head every night. Sentence3: Janet kept pushing him off the bed. Sentence4: The cat would just jump right back up. Sentence5: She had to start locking him out of the room.
Janet, Janet's cat