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 single copy of variant CYP2A6 alleles confer susceptibility to liver dysfunction in patients treated with coumarin?
Answer: No evidence was obtained that the studied polymorphism in CYP2A6 is a determinant of the coumarin-associated liver dysfunction.

Output: no


Input: Consider Input: Question: Do infant and young child feeding practices differ by ethnicity of Vietnamese mothers?
Answer: Breastfeeding practices were suboptimal and differed by ethnicity, which suggests need for tailored interventions at multiple levels to address ethnic-specific challenges and norms. Complementary feeding practices were less optimal among ethnic minorities compared to Kinh, which suggests need for broad intervention including improved food availability, accessibility, and security.

Output: yes


Input: Consider Input: Question: Does gender influence angiogenesis and arteriogenesis in a rabbit model of chronic hind limb ischemia?
Answer: Gender does not influence angiogenesis and arteriogenesis in the rabbit model of chronic hind limb ischemia. However, estrogen deficiency induced by oophorectomy negatively affects angiogenesis and arteriogenesis.


Output: no