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 mechanical ventilation with lower tidal volumes influence the prescription of opioids or sedatives?
Answer: Concerns regarding sedation requirements with use of lower V(T) are unfounded and should not preclude its use in patients with ALI/ARDS.

Ex Output:
no


Ex Input:
Question: Does [ Edaravone protect hearing from acute acoustic trauma in guinea pigs ]?
Answer: The level of ROS in cochlea were decreased significantly after intratympanic edaravone injection. The mechanism may due to its effective clearance of the ROS in cochlea.

Ex Output:
yes


Ex Input:
Question: Is bladder biopsy of normal-appearing mucosa helpful in patients with unexplained positive cytology after nonmuscle invasive bladder cancer?
Answer: Patients with malignant cytology despite normal cystoscopy have a high recurrence rate. Biopsy of normal-appearing bladder mucosa in this setting is rarely positive and does not alter the recurrence pattern.

Ex Output:

no