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.
Q: Sentence1: Jonathan did not like the beach a lot. Sentence2: One day it was very sunny. Sentence3: Jonathan decided to visit the beach once more. Sentence4: Jonathon had a very good time at the beach. Sentence5: After that, Jonathan visited the beach a lot more.
A:
Jonathan