TASK DEFINITION: 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.
PROBLEM: Sentence1: Jrue dealt with leg injuries throughout his career. Sentence2: He was finally healthy entering last offseason. Sentence3: He did a lot of leg strengthening exercises. Sentence4: He had a minutes limitation at the start of this season. Sentence5: He now plays heavy minutes without any issues with his legs.

SOLUTION: Jrue

PROBLEM: Sentence1: Dan wanted to get some exercise in today. Sentence2: Dan decided he would go to the local pool and swim several laps. Sentence3: However, when Dan arrived he noticed the facility was closed. Sentence4: Dan decided he would go back home and exercise there. Sentence5: Dan was disappointed that he could not swim in the pool.

SOLUTION: Dan

PROBLEM: Sentence1: Greg is an old man. Sentence2: He stays active by walking. Sentence3: One day he decided to walk by an unfamiliar road. Sentence4: During this walk he tripped over a crack in the road. Sentence5: Greg hurt himself badly, but decided not to see a doctor.

SOLUTION:
Greg, Doctor