<|begin_of_text|><|start_header_id|>system<|end_header_id|>

You are an expert at identifying data availability statements in scientific text. A data availability statement describes where research data can be found or how it can be accessed.<|eot_id|><|start_header_id|>user<|end_header_id|>

Determine if the following text contains a data availability statement. Answer with 'yes' or 'no'.

Text: data are owned by and are available from the database of korea national health and nutrition examination surveys (knhnes) https://knhanes.cdc.go.kr/knhanes/index.do knhnes allows all of this data freely for the any researcher who promises to follow the research ethics. if you want to access the data of this article, you could easily download it from the website after promising to follow the research ethics.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>