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.

Input: Consider Input: Question: Is l-arginine , the natural precursor of NO , effective for preventing bone loss in postmenopausal women?
Answer: We conclude from these results that supplementation with L-arginine hydrochloride is not effective for improving bone mass in humans.

Output: no

Input: Consider Input: Question: Does creatine supplementation affect kidney function in an animal model with pre-existing renal failure?
Answer: Creatine supplementation at a dosage of 2% w/w for 4 weeks does not impair kidney function in animals with pre-existing renal failure or in control animals.

Output: no

Input: Consider Input: Question: Is familiar Papillary Thyroid Carcinoma in a Large Brazilian Family Associated with Succinate Dehydrogenase Defects?
Answer: Familiar PTC and a GIST were not associated with SDHx mutations; additional genetic defects, yet unknown, may be responsible for the development of tumor.
Output: no