<|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: the authors confirm that all data underlying the findings are fully available without restriction. data are available from usgs nonindigenous aquatic species database (http://nas.er.usgs.gov/), the national ballast information clearinghouse (http://invasions.si.edu/nbic/), and the great lakes information network (http://www.great-lakes.net/).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>