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 meconium ileus in cystic fibrosis linked to central repetitive region length variation in MUC1 , MUC2 , and MUC5AC?
Answer: The genetic length variants in the central repetitive region of three MUC genes studied are not associated with MI in subjects with CF.

A: no
****
Q: 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.

A: yes
****
Q: Question: Is previous chronic cerebral infarction predictive for new cerebral ischemia after carotid endarterectomy?
Answer: The results of the present study suggest that preoperative chronic cerebral ischemia may aggravate postoperative newly developed cerebral ischemia in patients undergoing CEA.

A:
yes
****