<|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: All the data used for this study are publicly available.   http://www.londonair.org.uk/london/asp/datadownload.asp   https://www.england.nhs.uk/statistics/statistical-work-areas/covid-19-daily-deaths   https://www.gov.uk/government/publications/covid-19-track-coronavirus-cases.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>