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: mommy 
The person never called his mother mommy. Most young people still call their mothers by their child sayings.

SOLUTION: stereotype

PROBLEM: Target: sister 
I have a sister. We are getting ready for our next belt test in karate.

SOLUTION: anti-stereotype

PROBLEM: Target: herself 
She drew the picture herself. Curing cancer will happen eventually.

SOLUTION:
unrelated