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.

Example Input: Question: Does carriage of the methylenetetrahydrofolate reductase ( MTHFR ) C677T polymorphism influence the first and second trimester uterine artery Doppler flow?
Answer: In summary, the data presented in this adequately powered, prospective, controlled study establish that the MTHFR C677T polymorphism does not influence Doppler flow measurements.
Example Output: no

Example Input: Question: Does portal venous stasis during liver resection affect platelet aggregability?
Answer: Induced platelet aggregability is not affected by the method of surgical bleeding control used in liver resection. Platelet aggregability seems to be resistant even to portal venous stasis of up to 50 min during Pringle manoeuvre.
Example Output: no

Example Input: Question: Do essential amino acid ratios and mTOR affect lipogenic gene networks and miRNA expression in bovine mammary epithelial cells?
Answer: The observed up-regulation of lipogenic gene networks and the changes in expression of key miRNA involved in the control of lipogenic balance are indicative of a potentially important role of EAA ratios and mTOR signaling in the regulation of milk fat synthesis.
Example Output:
yes