Dataset {
    Int32 gid[gid = 14];
    Grid {
     ARRAY:
        Float64 area_km2[gid = 14];
     MAPS:
        Int32 gid[gid = 14];
    } area_km2;
    Byte basin_name[gid = 14][24];
    Sequence { Sequence { Sequence { Float64 ordinate; Float64 abscissa; } ring; } polygon; } coarse_geom[gid = 14];
    Byte label[gid = 14][24];
    Byte short_name[gid = 14][12];
} Basins;