<|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 C36m FF is available along with the remainder of the CHARMM force fields at http://mackerell.umaryland.edu/charmm_ff.shtml. More specifically, the parameter file (par_all36_prot_mod.prm) is provided in the toppar_c36_jul16.tgz file. The C36m FF is also included in the CHARMM program (version c41 and onward).  In addition, the FF may be used in a number of open source molecular simulation programs including NAMD, GROMACS and OpenMM.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>