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.

Input: Consider Input: Question: Does revaccination with Bacillus Calmette-Guerin ( BCG ) vaccine reduce morbidity from malaria in African children?
Answer: We found no evidence that BCG revaccination reduces morbidity from malaria.

Output: no


Input: Consider Input: Question: Do combined effects of obesity and type 2 diabetes contribute to increased breast cancer risk in premenopausal women?
Answer: Obesity and type 2 diabetes, owing to their effects on adipocytokines and inflammatory mediators, contribute to increased breast cancer risk in premenopausal women. This study emphasizes healthy life style and better management of these metabolic disorders to avoid the pathogenesis of breast cancer and of other chronic diseases.

Output: yes


Input: Consider Input: Question: Does prognostic significance of MSI2 predict unfavorable outcome in adult B-acute lymphoblastic leukemia?
Answer: These results confirm the association of MSI2 expression with outcome in adult B-ALL and demonstrate the utility of MSI2 as a clinical prognostic biomarker.


Output: yes