<|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: Databases providing emission data for different materials , products , and surfaces are an essential element needed toward operationalization of indoor exposure assessment within LCA . Currently , indoor emission data are not widely available or not in a suitable format for LCA ( e.g. , given as concentrations whereas emitted mass or emission rates would be required to link with our model results ) .<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>