<|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 network was constructed using publicly available data, which needed to be cleaned and appropriately formatted. an open-source database of express and local passenger trains is available on the websites of the indian railways, specifically: http://www.indianrail.gov.in/mail_express_trn_list.html, http://www.indianrailways.in/train-list. this data is compiled by ixigo, an e-ticket booking company and is publicly available on: http://www.ixigo.com/trains/trains.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>