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.
Problem:Sentence1: Reese made an astronaut helmet for his younger brother. Sentence2: The brother tried it on and started playing pretend. Sentence3: Reese went outside hours later. Sentence4: His brother had strapped fireworks to the back of his bicycle. Sentence5: As he lit the match, Reese ran out and yelled he wasn't an astronaut.
Solution:
Reese, Brother