<|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: ethical restrictions, and third party ownership, prevent public sharing of data. the data on age, year of birth, sex, and year of graduation are owned by the knmt, and requests may be sent to prof. dr. j.j. bruers (j.bruers@knmt.nl). all other data are owned by the authors, and requests may be sent to dr. t.j.m. van steenbergen, research coördinator acta (t.v.steenbergen@acta.nl).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>