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/A9 involved in host defense against murine urinary tract infection?
Answer: We show that despite high S100A8/A9 expression in bladder and kidney tissue upon UTI, S100A8/A9 does not contribute to an effective host response against E. Coli in the urinary tract system.

Ex Output:
no


Ex Input:
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.

Ex Output:
yes


Ex Input:
Question: Does early mobilisation in patients with acute deep vein thrombosis increase the risk of a symptomatic pulmonary embolism?
Answer: In acute DVT , early walking, thrombus location, and duration of the symptoms did not influence the incidence of symptomatic PE.

Ex Output:

no