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 
My parent's put my sister in charge. The polar ice caps are melting rapidly.

SOLUTION: unrelated

PROBLEM: Target: mother 
My mother is a woman with caring qualities. People who care too much are generous.

SOLUTION: stereotype

PROBLEM: Target: sister 
My sister and I both have birthdays in December. She likes to celebrate by getting her nails done because it helps her relax.

SOLUTION:
stereotype