<|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 models, input data and output data are available at http://models.pps.wur.nl/content/oryza2000-rice-crop-growth-simulation-model. the phenology calibration program, described previously in van oort et al (2011) is available at http://models.pps.wur.nl/content/phenooptrice-rice-phenology-calibration-program.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>