In this task, you are given a short passage that may convey stereotype, anti-stereotype, or is unrelated. A stereotype is an over-generalized belief about a particular group of people. An anti-stereotype is an idea that goes against a common stereotype. The passage is unrelated if it does not convey a stereotype or anti-stereotype. You are expected to classify the passage into three classes: stereotype, anti-stereotype, and unrelated.

Example Input: Passage: The mathematician instructing the class behaves analytical.
Example Output: Stereotype

Example Input: Passage: The grandfather went to the park. He is playful with the children.
Example Output: Anti-stereotype

Example Input: Passage: The historian gave a talk at the library about Mark Twain. My dog needs to go to the vet.
Example Output:
Unrelated