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.

[Q]: Question: Is the WFS1 ( Wolfram syndrome 1 ) a major susceptibility gene for the development of psychiatric disorders?
Answer: Our results suggest that WFS1 is not a major susceptibility gene for the development of psychiatric disorders in our population.
[A]: no


[Q]: Question: Are complaints of sleep disturbances associated with cardiovascular disease : results from the Gutenberg Health Study?
Answer: Given the high prevalence of complaints of sleep disturbances and their strong impact on health status, increased efforts should be undertaken for their identification and treatment.
[A]: yes


[Q]: Question: Is elevated preoperative plasma D-dimer level a useful predictor of chemoresistance and poor disease outcome for serous ovarian cancer patients?
Answer: Elevated preoperative plasma D-dimer levels were associated with chemoresistance and poor disease outcome in serous ovarian cancer patients. Further validation of this easily available parameter as a promising prognostic biomarker for patients with SOC in prospective studies should be encouraged.
[A]:
yes