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: 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!
Ava