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.

Question: Is n-acetyl beta-D-glucosaminidase attached to human sperm membranes through the glycosylphosphatidyl inositol ( GPI ) -anchor?
Answer: The evidence presented strongly suggests that human sperm membrane bound NAGA is not attached via the GPI anchor.
no