Definition: 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: I had an art teacher in middle school. Sentence2: He said that he would let us not have to work. Sentence3: All we had to do was tell him the definition of art. Sentence4: We tried to define the word. Sentence5: But he didn't mean it literally.
Output:
I (myself), Art teacher