person/rembrandt/13 matches the site

public static Person Rembrandt_Life()
{
    var rembrandt = new Person()
        .WithContext()
        .WithId("https://linked.art/example/person/rembrandt/13")
        .WithLabel("Rembrandt");

    rembrandt.Born = new Birth()
    {
        TimeSpan = LinkedArtTimeSpan.FromDay(1606, 7, 15)
    };
    rembrandt.Died = new Death()
    {
        TimeSpan = LinkedArtTimeSpan.FromDay(1669, 10, 4),
        TookPlaceAt = [
            Tgn.Place("7006952", "Amsterdam")
        ]
    };


    return rembrandt;
}

• Terms outside the registry The vocabulary registry holds only the terms linked.art itself publishes, so a dataset's own concepts, places and people are written with Aat.Term, Tgn.Place and Ulan.Person, giving the id and the label.

var person = new Person
{
    Context = ["https://linked.art/ns/v1/linked-art.json"],
    Id = "https://linked.art/example/person/rembrandt/13",
    Label = "Rembrandt",
    Born = new Birth
    {
        TimeSpan = new LinkedArtTimeSpan
        {
            BeginOfTheBegin = new LinkedArtDate(1606, 7, 15),
            EndOfTheEnd = new LinkedArtDate(1606, 7, 15, 23, 59, 59),
        },
    },
    Died = new Death
    {
        TimeSpan = new LinkedArtTimeSpan
        {
            BeginOfTheBegin = new LinkedArtDate(1669, 10, 4),
            EndOfTheEnd = new LinkedArtDate(1669, 10, 4, 23, 59, 59),
        },
        TookPlaceAt = [Tgn.Place("7006952", "Amsterdam")],
    },
};

Generated from the object the example builds: every property that is set, as object initialisers, with the vocabulary constants where a term is in the registry. The fluent helpers are a convenience, not a requirement; this form and the one as written produce the same JSON.