Q: 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.
Sentence1: Ben left his homework on the kitchen table so he wouldn't forget it. Sentence2: But in the morning it was missing. Sentence3: He looked all over, afraid he was going to be late for school. Sentence4: He finally found scraps of paper in the dog's bed. Sentence5: The teacher was never going to believe him!
A:
Ben, Teacher