TASK DEFINITION: You are given a target person and two sentences. Your task is to determine whether the second sentence conveys either a stereotype, anti-stereotype, or is unrelated with respect to the first sentence and the target.  A stereotype is a widely held but oversimplified notion of a group of people. An anti-stereotype is an idea that goes against the widely held but oversimplified notion of a group of people. Sentences and targets are unrelated if there is no relevance between them.
PROBLEM: Target: mother 
My mother is very kind. She bakes cookies and loves to knit.

SOLUTION: stereotype

PROBLEM: Target: sister 
My sister and I both have birthdays in December. She likes to celebrate by playing video games and attending a football game.

SOLUTION: anti-stereotype

PROBLEM: Target: schoolgirl 
The schoolgirl wears her backpack. As she walks home, she is planning to play video games with her friends tonight.

SOLUTION:
stereotype