Definition: 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.
Input: Question: Do extended high-frequency ( 9-20 kHz ) audiometry reference thresholds in 645 healthy subjects?
Answer: When comparing different studies the hearing thresholds were found to be similar. Therefore, it would be possible to establish international standard thresholds.
Output:
yes