Detailed Instructions: 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.
Q: Question: Do subjective sleepiness ratings ( Epworth sleepiness scale ) reflect the same parameter of sleepiness as objective sleepiness ( maintenance of wakefulness test ) in patients with narcolepsy?
Answer: In a large narcolepsy sample, the MWT and ESS are not equally useful, and do not measure the same parameter of sleepiness.
A:
no