<|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: This study uses secondary data that was obtained from the GISAID EpiFlu<U+0099> Database. The software used in this study is available as open source software to allow for reproduction of our analysis.   https://www.gisaid.org/   https://github.com/vuw-c2lab/transcendental-information-cascades/tree/master/input/2020-02-03-2019nCoV<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>