<|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 available from the following urls: congo brazzaville (dhs 2011-2012): http://www.dhsprogram.com/what-we-do/survey/survey-display-388.cfm; mozambique (dhs 2011): http://www.dhsprogram.com/what-we-do/survey/survey-display-362.cfm; nigeria (dhs 2013): http://www.dhsprogram.com/what-we-do/survey/survey-display-438.cfm; uganda (dhs 2011): http://www.dhsprogram.com/what-we-do/survey/survey-display-373.cfm.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>