<|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: all 3d surface and tomographic files are available from the morphosource database (http://www.morphosource.org), the ditsong national museum of natural history digital archive website (http://www.sapalaeo.com/dnmnh-archive) and direct request from the plio-pleistocene section of the ditsong national museum for any and all requesting researchers. the only restriction that is applied to access this data is for researchers to file an official request for access to the surface/tomographic data and who agree to follow the previously established guidelines of the plio-pleistocene section of the ditsong national museum digital data access agreement (available at http://www.sapalaeo.com/dnmnh-archive). this policy of documenting specimen use is consistent with current on-site and digital fossil access protocols of the dnmnh plio-pleistocene palaeontology section, ensures adherence to the guidelines for acceptable use of the specimens (e.g., strictly non-commercial, research and educational purposes only), and allows the museum to retain records of specimen use across research projects to ensure there are no direct research conflicts between individual research groups.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>