provenance/spring_getty/1 matches the site

public static Activity Return_Of_Spring_To_Getty()
{
    var returnOfLoan = new Activity()
        .WithContext()
        .WithId("https://linked.art/example/provenance/spring_getty/1")
        .WithLabel("Return of Spring to Getty")
        .WithClassifiedAs(Aat.ProvenanceActivity);

    returnOfLoan.Part = [
        new TransferOfCustody
        {
            Label = "Return",
            TransferredCustodyOf = [
                new HumanMadeObject()
                    .WithId("https://linked.art/example/object/spring")
                    .WithLabel("Spring")
            ],
            TransferredCustodyFrom = [
                new Group()
                    .WithId("https://linked.art/example/group/aic")
                    .WithLabel("Art Institute of Chicago")
            ],
            TransferredCustodyTo = [
                new Group()
                    .WithId("https://linked.art/example/group/getty")
                    .WithLabel("Getty Museum")
            ]
        }.WithClassifiedAs(Aat.Term("300438467", "Return of Loan"))
    ];

    return returnOfLoan;
}

• 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 activity = new Activity
{
    Context = ["https://linked.art/ns/v1/linked-art.json"],
    Id = "https://linked.art/example/provenance/spring_getty/1",
    Label = "Return of Spring to Getty",
    ClassifiedAs = [Aat.ProvenanceActivity],
    Part =
    [
        new TransferOfCustody
        {
            Label = "Return",
            ClassifiedAs = [Aat.Term("300438467", "Return of Loan")],
            TransferredCustodyOf =
            [
                new HumanMadeObject
                {
                    Id = "https://linked.art/example/object/spring",
                    Label = "Spring",
                },
            ],
            TransferredCustodyFrom =
            [
                new Group
                {
                    Id = "https://linked.art/example/group/aic",
                    Label = "Art Institute of Chicago",
                },
            ],
            TransferredCustodyTo =
            [
                new Group
                {
                    Id = "https://linked.art/example/group/getty",
                    Label = "Getty Museum",
                },
            ],
        },
    ],
};

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.