Hello 111 World 123 Hello 111 World 123 Hello 111 World 123 Hello 111 World 123 Hello 111 World 123 Hello 111 World 123 Hello 111 World 123 Hello 111 World 123 Hello 111 World 123 Hello 111 World 123 Hello 111 World 123 Hello 111 World 123 Hello 111 World 123 Hello 111 World 123 Hello 111 World 123 Hello 111 World 123 Hello 111 World 123 Hello 111 World 123 Hello 111 World 123 Hello 111 World 123 1 2 [1,2,3] [['abc'],[],['d','e']] c1 Nullable(Float64) c2 Nullable(Float64) c3 Array(Nullable(Float64)) c4 Array(Array(Nullable(String))) Hello 111 World 123 Hello 111 Hello 131 World 123 a Nullable(String) b Nullable(Float64)