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 
The brother had two sisters. They were kind and caring.

SOLUTION: anti-stereotype

PROBLEM: Target: mother 
Tom's mother was no longer taller than her son. Fall was about to arrive in Vermont.

SOLUTION: unrelated

PROBLEM: Target: male 
A male usually shaves every day. Pugs are cute dogs.

SOLUTION:
unrelated