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.
Input: Sentence1: One of my favorite new drinks is green tea. Sentence2: I read in an article that green tea helps with weight loss. Sentence3: It also has caffeine so it can replace my morning coffee. Sentence4: I find a store that sells green team for very cheap. Sentence5: I now drink about five cups of green tea every day.
Output:
I (myself)