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 renal excretion of fluoride after fluoride mouth rinse in children?
Answer: After the use of a fluoride mouthwash, in children, there is a statistically significant increase of fluoride ion in urine, which can be attributed to the application of this product.
[A]: yes


[Q]: Question: Is multivitamin-mineral supplementation as efficacious as is iron supplementation in improving hemoglobin concentrations in nonpregnant anemic women living in Mexico?
Answer: MM supplements may not be as efficacious as is iron alone in improving the hemoglobin status of anemic women.
[A]: no


[Q]: Question: Is intestinal metaplasia a strong risk factor for bladder cancer : study of 53 cases with long-term follow-up?
Answer: Intestinal metaplasia of the urinary bladder is not a strong risk factor for adenocarcinoma or urothelial cancer.
[A]:
no