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: Billy really enjoyed coffee. Sentence2: Often, he'd go to a coffee shop to try new types. Sentence3: He tried every type of coffee available to him from the shop. Sentence4: As he had no new ones to try, Billy decided to go to the source. Sentence5: He flew out to Nicaragua the next week to get it fresh.
Solution:
Billy