dataset {

    Sequence {

	String name;

	Int32 age;

    } person;

    Structure {

	Int32 j;

	Int32 i;

	Structure {

	    int32 i;

	    float64 f[10];

	} data;

    } exp;

    Grid {

      Array:

	float64 g[10][10][10];

      Maps:

	float64 lat[10];

	float64 lon[10];

	float64 weirdness[10];

    } strange;

} data6;