<|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 tree used in the study is the one presented in [currie t, meade a, guillon m and mace r (2013) cultural phylogeography of the bantu languages of sub-saharan africa. proceedings of the royal society of london b biological sciences 280: 20130695.doi: 10.1098/rspb.2013.0695.] all methods of tree building can be consulted there. the ethnographic data mapped onto the tree is all from the ethnographic atlas [murdock, g (1967) ethnographic atlas: a summary. the university of pittsburgh, pittsburgh.  http://www.jstor.org/stable/3772751], variables 11, 27 and 43 were used, as detailed in the methods section of the manuscript.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>