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 gentlemen gathered for lunch. Ice is frozen water.
Example Output: Unrelated

Example Input: Passage: The historian searched tirelessly for the correct document. She's very social and makes plenty of time for her friends after work.
Example Output: Anti-stereotype

Example Input: Passage: The classroom is approximately half male students. They are very rowdy and aggressive.
Example Output:
Stereotype