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 
The mother is home. The desk is dirty.

SOLUTION: unrelated

PROBLEM: Target: schoolboy 
I have known him since he was a schoolboy. He went to class every day.

SOLUTION: stereotype

PROBLEM: Target: schoolgirl 
The schoolgirl started walking towards the bus stop. It is going to rain today.

SOLUTION:
unrelated