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: 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.
[A]: no


[Q]: Question: Is high salt intake associated with a higher risk of cardiovascular events : a 7.2-year evaluation of a cohort of hypertensive patients?
Answer: In a cohort of hypertensive patients, high salt intake independently predicts the occurrence of CV events, particularly of stroke.
[A]: yes


[Q]: Question: Does transcutaneous vagus nerve stimulation modulate tinnitus-related beta- and gamma-band activity?
Answer: We conclude that tVNS was successful in modulating tinnitus-related beta- and gamma-band activity and thus could have potential as a treatment method for tinnitus.
[A]:
yes