Dataset {
    Sequence {
        String name;
        Int32 age;
    } person;
    Sequence {
        Byte b;
        Int32 i32;
        UInt32 ui32;
        Int16 i16;
        UInt16 ui16;
        Float32 f32;
        Float64 f64;
        String s;
        Url u;
    } types;
} SimpleSequences;