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: Does oral contraceptive use by teenage women affect peak bone mass : a longitudinal study?
Answer: Oral contraceptive pill use by healthy, white, teenage females does not affect acquisition of peak bone mass.

Output: no


Input: Consider Input: Question: Does vasopressin raise cardiac enzymes following cardiac surgery : a randomized double-blind clinical trial?
Answer: Vasopressin infusion has been used to treat catecholamine-unresponsive shock. In this study, intraoperative vasopressin was used safely as a possible first-line drug for treating hypotension; however, it did not increase the levels of cardiac enzymes after cardiac surgery.

Output: no


Input: Consider Input: Question: Are gSTM1 , GSTT1 , GSTP1 , and GSTA1 genetic variants associated with coronary artery disease in Taiwan?
Answer: The GST genetic variants examined were not associated with susceptibility to CAD in our Taiwanese cohort. This null association requires further confirmation with larger samples.


Output: no