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: Is prooxidant-anti-oxidant balance associated with extent of coronary artery disease?
Answer: In conclusion, we found higher levels of oxidative stress in CAD+ patients compared to healthy subjects. The oxidation level was not related to measures of the extent of CAD such as number of stenosed vessels.
Example Output: no

Example Input: Question: Are cD44-9v and CD44-10v potential molecular markers for squamous cell carcinoma of the vulva?
Answer: Our findings warrant larger multi-institutional studies to determine the potential of CD44-9v and CD44-10v as molecular markers of disease recurrence in vulvar carcinoma. We propose to test the use of anti-CD44-9v monoclonal antibody for radioimmunoimaging of occult LN metastases.
Example Output: yes

Example Input: Question: Is alpha-Hemoglobin stabilizing protein a suitable marker for a screening test for variant Creutzfeldt-Jakob disease?
Answer: We conclude that quantitation of AHSP is not likely to be useful for detection of preclinical prion disease in man.
Example Output:
no