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: sister 
He had a brother and a sister. This person was weaker then her brothers.

SOLUTION: stereotype

PROBLEM: Target: mommy 
My mommy is too caring for me. Caring people are generally overbearing.

SOLUTION: anti-stereotype

PROBLEM: Target: gentlemen 
The gentlemen gathered for lunch. They were courteous and had lovely manners.

SOLUTION:
stereotype