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: Ava was exhausted. Sentence2: She'd run across the soccer field five times. Sentence3: She was training to be a better player. Sentence4: She sat down to rest for a bit. Sentence5: Then she got up and ran again!

SOLUTION: Ava

PROBLEM: Sentence1: Last year Paul was about an inch too short for the big roller coaster. Sentence2: He was confident when he walked up to the measuring stick. Sentence3: Sure enough, he had grown well over an inch. Sentence4: He proudly got on the roller coaster. Sentence5: It was as much fun as he expected it to be!

SOLUTION: Paul

PROBLEM: Sentence1: Rick was always paranoid about the occurrence of natural disasters. Sentence2: When the earthquake struck his area, his house was without power. Sentence3: Rick grabbed his power generator and started it up. Sentence4: He enjoyed having power while his neighbors were left in the dark. Sentence5: After the power was restored, Rick's neighbors bought generators too.

SOLUTION:
Neighbors, Rick