<|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 online for the fifa world cups (www.fifa.com), confederations cup and copa américa 2011 (www.ca2011.com); or from the fourfourtwo stats zone application for the uefa euro cup and caf africa cup of nations cup. the authors confirm that all data are publicly available for other interested parties.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>