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: Is tobacco smoking associated with decreased semen quality?
Answer: Results demonstrated a decline in semen quality in a dose dependent tobacco smoking manner.

Ex Output:
yes

Ex Input:
Question: Does the methionine-choline deficient dietary model of steatohepatitis exhibit insulin resistance?
Answer: GTT, ITT and QUICKI confirmed the absence of insulin resistance in the MCD fed mice. This model causes fibrosing steatohepatitis and may help delineate the non-insulin resistant mechanisms involved in human steatohepatitis.

Ex Output:
no

Ex Input:
Question: Is interleukin-1 gene associated with preeclampsia in Taiwanese?
Answer: Our data do not support a role of the interleukin-1 gene in the pathogenesis of preeclampsia in Taiwanese women.

Ex Output:
no