<|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: acoustic data are unavailable as they are part of the european data collection framework in greek and sicilian waters and are subjected to legal restrictions by the respective national fisheries data collection programs and the eu legislation and consent of the member states is a prerequisite for providing them to third parties. these acoustic data can only be available upon request from dg mare http://ec.europa.eu/maritimeaffairs/index_en.htm and/or the respective member states. spatial indicators calculations used for the prinicipal component analysis are available in s1 and s2 tables. pca scores used for multiple regression are available in s3 and s4 tables.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>