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 Q]: Question: Is polymorphism Ala54Thr of fatty acid-binding protein 2 gene associated with stroke risk in Han population of Hunan China?
Answer: Our study shows that Ala54Thr of FABP2 may be not associated with stroke risk but associated with plasma TG level of stroke patients for Hunan Han population of China.
[EX A]: no

[EX Q]: 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.
[EX A]: no

[EX Q]: Question: Does the polycystic ovary syndrome predict further miscarriage in Japanese couples experiencing recurrent miscarriages?
Answer: A routine test for diagnosis of PCOS is not necessary in patients experiencing recurrent miscarriages because none of the related parameters examined in this study predicted subsequent miscarriage.
[EX A]:
no