provenance/yuag_stora/1 matches the site

public static Activity Exchange_Of_Objects()
{
    var exchange = new Activity()
        .WithContext()
        .WithId("https://linked.art/example/provenance/yuag_stora/1")
        .WithLabel("Exchange of Objects")
        .WithClassifiedAs(Aat.ProvenanceActivity);

    var feigen = new Group()
        .WithId("https://linked.art/example/group/feigen")
        .WithLabel("Richard Feigen Gallery");
    var yuag = new Group()
        .WithId("https://linked.art/example/group/yuag")
        .WithLabel("Yale University Art Gallery");

    exchange.Part = [
        new Acquisition
        {
            Label = "Acquisition of Personnages",
            TransferredTitleOf = [
                new HumanMadeObject()
                    .WithId("https://linked.art/example/object/masson_personnages")
                    .WithLabel("Personnages dans un parc"),
                new HumanMadeObject()
                    .WithId("https://linked.art/example/object/beckmann_nude")
                    .WithLabel("Nude Woman by Beckmann")
            ],
            TransferredTitleFrom = [feigen, yuag],
            TransferredTitleTo = [yuag, feigen]
        },
        new Acquisition
        {
            Label = "Acquisition of Nude"
        }
    ];

    return exchange;
}

var activity = new Activity
{
    Context = ["https://linked.art/ns/v1/linked-art.json"],
    Id = "https://linked.art/example/provenance/yuag_stora/1",
    Label = "Exchange of Objects",
    ClassifiedAs = [Aat.ProvenanceActivity],
    Part =
    [
        new Acquisition
        {
            Label = "Acquisition of Personnages",
            TransferredTitleOf =
            [
                new HumanMadeObject
                {
                    Id = "https://linked.art/example/object/masson_personnages",
                    Label = "Personnages dans un parc",
                },
                new HumanMadeObject
                {
                    Id = "https://linked.art/example/object/beckmann_nude",
                    Label = "Nude Woman by Beckmann",
                },
            ],
            TransferredTitleFrom =
            [
                new Group
                {
                    Id = "https://linked.art/example/group/feigen",
                    Label = "Richard Feigen Gallery",
                },
                new Group
                {
                    Id = "https://linked.art/example/group/yuag",
                    Label = "Yale University Art Gallery",
                },
            ],
            TransferredTitleTo =
            [
                new Group
                {
                    Id = "https://linked.art/example/group/yuag",
                    Label = "Yale University Art Gallery",
                },
                new Group
                {
                    Id = "https://linked.art/example/group/feigen",
                    Label = "Richard Feigen Gallery",
                },
            ],
        },
        new Acquisition
        {
            Label = "Acquisition of Nude",
        },
    ],
};

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.