<|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 original data includes monte carlo simulated zubal thorax phantom and brain phantom and the data from a real patient. among them, zubal phantom data
is an open-source-kind-of data and we would like to add their original paper as a reference (please check reference [50]). the brain phantom comes from the hoffman brain phantom and the real patient data including the data obtained from cti ecat pet scanner are provided by prof. fessler who put them online as an open source data at: http://web.eecs.umich.edu/~fessler/result/et/pet,emis/.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>