<|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: data are available on the harvard forest data archive (accession number hf113) at http://harvardforest.fas.harvard.edu/harvard-forest-data-archive and on the long term ecological research network, doi:10.6073/pasta/be0b964a5caedb3f9c89006eba29cbf7.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>