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.

Example Input: Question: Is cardiac autonomic neuropathy in patients with uraemia related to pre-diabetes?
Answer: The prevalence of CAN and impaired glucose tolerance is high in uraemic patients, but impaired glucose tolerance seems to play no significant role in the aetiology of CAN in uraemic patients.
Example Output: no

Example Input: Question: Are front-of-pack symbols a reliable indicator of products with healthier nutrient profiles?
Answer: FOP symbols are being used to market foods that are no more nutritious than foods without this type of marketing. Because FOP symbols may influence consumer perceptions of products and their purchases, it may be a useful public health strategy to set minimum nutritional standards for products using FOP symbol marketing.
Example Output: no

Example Input: Question: Does comparative DNA methylation and gene expression analysis identify novel genes for structural congenital heart diseases?
Answer: By interrogating DNA methylation and gene expression data, we identify two novel mechanism contributing to the phenotypic expression of CHDs: aberrant methylation of promoter CpG islands and methylation alterations leading to differential splicing.
Example Output:
yes