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.

Ex Input:
Question: Do elevated serum progesterone levels on the day of human chorionic gonadotropin administration predict outcome in assisted reproduction cycles?
Answer: Serum P levels before hCG administration do not predict the outcome of ART cycles in patients suppressed with GnRH-a before hMG stimulation. Lower fertilization rates observed in the high P cycles did not have an effect on clinical outcome.

Ex Output:
no


Ex Input:
Question: Does dietary fish oil prevent doxorubicin-induced cardiomyopathy in rats?
Answer: Dietary fish oil may reduce antioxidant defences and accelerate susceptibility of the myocardium to lipid peroxidation in rats under doxorubicin treatment. This may partly explain why dietary fish oil does not prevent doxorubicin-induced cardiomyopathy.

Ex Output:
no


Ex Input:
Question: Do systemic estrogens have no conclusive beneficial effect on human skin connective tissue?
Answer: Accordingly, several studies have been accomplished, in which hormone replacement therapy (HRT) has been used in order to prevent skin aging at or after the menopause. In this overview the results of previous studies, and a study done recently, are critically reviewed.

Ex Output:

yes