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: Lucy sat at the police station. Sentence2: She'd been lost and a kind stranger brought her here. Sentence3: She sat with puffy swollen tear stained eyes waiting on her grandpa. Sentence4: An officer gave her a soda while she waited. Sentence5: She was so happy to see grandpa when he arrived, she knocked it over.

SOLUTION: Grandpa, Lucy, Kind stranger, Officer

PROBLEM: Sentence1: A group of five friends met at the local park. Sentence2: One brought a basketball. Sentence3: They all decided to play basketball. Sentence4: Everyone laughed and had fun. Sentence5: It was a fun day everyone remembers.

SOLUTION: Five friends, Group, One

PROBLEM: Sentence1: Berry was a struggling musician. Sentence2: He loved all kinds of music but didn't have any inspiration. Sentence3: On Friday his girlfriend of three years broke up with him. Sentence4: He began writing blues tunes about her. Sentence5: Then his music was a hit and people loved to hear him sing the blues.

SOLUTION:
His girlfriend, Berry, People