<|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: Source  data  controlled  by  Public  Health  England.   Under the  terms  of  our  data  sharing  agreement,  the  authors  are not  able  to  re-share  the  source  data  but  will  entertain  re-quests for scientific collaboration.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>