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: 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: Is fractional urinary excretion of IgG the most powerful predictor of renoprotection by ACE inhibitors in IgA nephropathy?
Answer: Renoprotection by ACEi is a multifactorial phenomenon: the best predictor of renoprotection is FEIgG, a marker of disruption of glomerular barrier to proteins; renoprotection depends not only on ability to reduce proteinuria, but probably also on antiinflammatory and antifibrotic activity.

Ex Output:
yes

Ex Input:
Question: Does [ In contrast to captopril and enalapril , losartan increase mortality of gerbils after carotid ligation ]?
Answer: In contrast to oral preadministration of enalapril and captopril that of losartan does not increase the mortality of the gerbil after unilateral carotid ligation in spite of the same decrease in systemic blood pressure. Although a lower mortality than in controls was not observed with losartan as in the princeps study of Fernandez, these data are consistent with the demonstration by this author that angiotensin II plays a critical protective role in acute ischemia probably by promoting collateral circulation recruitment through non-AT1 receptors stimulation.

Ex Output:
no