def get_sim_type(sim_type):
    """Get the Sim_Type section of the input file"""

    sim_types = ["nvt", "npt", "gcmc", "gemc", "gemc_npt"]
    if sim_type not in sim_types:
        raise ValueError(
            "Unsupported sim_type: {}. Supported options"
            "include {}".format(sim_type, sim_types)
        )

    inp_data = """
# Sim_Type
{sim_type}
!------------------------------------------------------------------------------
""".format(
        sim_type=sim_type
    )

    return inp_data