<|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: PDU composition occurs when a packet arrives from the transport layer. First, the route of the packet to the destination address is determined by the routing mechanism. The routing mechanism in CLNP is described in the section 4.3 above. The routing **data** is then included in the options part of the CLNP header. After that, the PDU composition is performed by attaching CLNP header to the packet.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

no<|eot_id|>