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 Input:
Question: Is s100A8 a novel therapeutic target for anaplastic thyroid carcinoma?
Answer: These findings establish a novel role for S100A8 in the promoting and enhancing of ATC progression. They further suggest that the inhibition of S100A8 could represent a relevant therapeutic target, with the potential of enabling a more effective treatment path for this deadly disease.

Ex Output:
yes


Ex Input:
Question: Does lung-protective mechanical ventilation protect against acute kidney injury in patients without lung injury at onset of mechanical ventilation?
Answer: In the present study in critically patients without ALI at onset of mechanical ventilation, lower tidal volume ventilation did not reduce the development or worsening of AKI compared with conventional tidal volume ventilation.

Ex Output:
no


Ex Input:
Question: Does chest wall recurrence after mastectomy always portend a dismal outcome?
Answer: Patients with CWR are a heterogeneous population. Patients with initial node-negative disease who develop CWR after 24 months have an optimistic prognosis, especially if they are treated with radiation.

Ex Output:

no