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: Dan dreaded doing back to school shopping with his kids. Sentence2: However, Dan had to purchase new backpacks and shoes for the kids. Sentence3: Dan decided to go to the mall to get the school shopping done. Sentence4: After looking through several stores, Dan didn't find anything. Sentence5: Dan was disappointed that he did not find anything at the mall.
Kids, Dan

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: Tim's girlfriend had been acting mean. Sentence2: He tried to ask her what was wrong. Sentence3: She became confrontational. Sentence4: She realized she was being irrational. Sentence5: Eventually Tim's girlfriend apologized.
Tim, Tim's girlfriend