You will be given a definition of a task first, then some input of the task.
In this task, you are given a short passage that conveys a stereotype or an anti-stereotype. A stereotype is an over-generalized belief about a particular group of people(based on race, ethnicity, gender, age, abilities, etc.). An anti-stereotype is an idea that goes against a common stereotype. You are expected to classify the passage into two classes: stereotype or anti-stereotype.

Passage: At 20 years old it is hard to stay up late without a nap.
Output:
Anti-stereotype