Dataset {
    Int32 gid[gid = 30];
    Byte adm1_code[gid = 30][6];
    Byte adm1_name[gid = 30][11];
    Byte adm2_code[gid = 30][9];
    Byte adm2_name[gid = 30][12];
    Grid {
     ARRAY:
        Int32 geom_id[gid = 30];
     MAPS:
        Int32 gid[gid = 30];
    } geom_id;
    Sequence { Sequence { Sequence { Float64 ordinate; Float64 abscissa; } ring; } polygon; } the_geom[gid = 30];
} Sub-Districts;