Dataset {
    Int32 new_distid[new_distid = 25];
    Byte name1[new_distid = 25][12];
    Grid {
     ARRAY:
        Float64 sum_area[new_distid = 25];
     MAPS:
        Int32 new_distid[new_distid = 25];
    } sum_area;
    Sequence { Sequence { Sequence { Float64 ordinate; Float64 abscissa; } ring; } polygon; } the_geom[new_distid = 25];
} Districts;