<|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 relevant data except dna sequences are within the paper and its supporting information files. dna sequences for e. coli are available from the ecocyc database for escherichia coli k-12 substr. mg1655; (http://ecocyc.org). dna sequences for c. elegans are available from the ensemble database ws220 (c. elegans release 66); (http://feb2012.archive.ensembl.org/caenorhabditis_elegans).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>