<|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: Daily PM2.5 and PM10 data were collected from the first link below. COVID-19 confirmed cases and deaths information be obtained from the second and third links.   http://106.37.208.233:20035/   http://www.nhc.gov.cn/xcs/xxgzbd/gzbd_index.shtml   http://wjw.hubei.gov.cn/bmdt/ztzl/fkxxgzbdgrfyyq/<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>