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: A friend went to get a tattoo. Sentence2: The tattoo artist had a cold, but was wearing gloves. Sentence3: While he was giving the tat, he sneezed loudly and harshly. Sentence4: Soon I realized he had scribbled on my friend, because of the sneeze! Sentence5: My friend was so livid, he demanded the tattoo be free.
Output:
I (myself), A friend, Tattoo artist