<|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 authors confirm that, for approved reasons, some access restrictions apply to the data underlying the findings. the data in this paper comes from various sources. opportunistic data can be requested from the dutch national authority for data concerning nature at www.ndff.nl; reptile monitoring data can be requested from reptile, amphibian and fish conservation netherlands at www.ravon.nl; butterfly and dragonfly monitoring data can be requested from dutch butterfly conservation and the dutch society for dragonfly studies at www.vlinderstichting.nl; and grasshopper monitoring data can be requested from the european invertebrate survey - the netherlands at www.eis-nederland.nl.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>