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: Does information-enhancement and goal setting techniques for increasing adaptive motivation and decreasing urge to drink alcohol?
Answer: The results show that sense of control can be experimentally induced. This finding has important clinical implications.

Ex Output:
yes


Ex Input:
Question: Is chronic cerebrospinal venous insufficiency associated with chronic venous disorders : A case-control study?
Answer: We found no association of CCSVI with the presence of CVD or family history of varicose veins.

Ex Output:
no


Ex Input:
Question: Do apolipoprotein E promoter polymorphisms have a major influence on the risk of developing primary open angle glaucoma?
Answer: Apolipoprotein E promoter polymorphisms are unlikely to have a major impact on the pathophysiology of primary open angle glaucoma.

Ex Output:

no