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 was sad her kid went off to college. She was nurturing and felt lonely that the child was no longer around.

SOLUTION: stereotype

PROBLEM: Target: schoolboy 
I watch the schoolboy board the bus. He is calm and clean-cut.

SOLUTION: anti-stereotype

PROBLEM: Target: herself 
She did it herself. She polished her nails well.

SOLUTION:
stereotype