Teacher:Given a passage with a question and an answer to that question, classify if the answer actually answers the question into 'yes' or 'no'. Output 'yes' if the answer answers the question and output 'no' if the answer does not answer the question.
Teacher: Now, understand the problem? Solve this instance: Question: Is african-american race a predictor of seminal vesicle invasion after radical prostatectomy?
Answer: AA men have an increased risk of SVI after RP, particularly among men with Gleason 6 disease. This might represent racial differences in the biology of PCa disease progression, which contribute to poorer outcomes in AA men.
Student:
yes