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: Are wedding rings a significant source of bacterial contamination following surgical scrubbing?
Answer: This preliminary study would suggest that a traditional band wedding ring is not a source of a bacterial load following a standard surgical scrub procedure and, as such, there is no requirement for their removal pre-operatively.
[A]: no

[Q]: Question: Does wNT2 promote Cervical Carcinoma Metastasis and Induction of Epithelial-Mesenchymal Transition?
Answer: WNT2 might be a novel predictor of PLNM and a promising prognostic indicator in cervical cancer.
[A]: yes

[Q]: Question: Is the Exercise Medicine Global Health Initiative : a 2014 update?
Answer: Broad implementation of PA counselling and referral systems, as clinical practice standard of care, has the potential to improve PA at the population level by complementing and leveraging other efforts and to contribute to achieving global targets for the reduction of inactivity and related morbidity and mortality.
[A]:
yes