object/catalog/1 matches the site

public static HumanMadeObject Exhibition_Catalog_1()
{
    var catalog = new HumanMadeObject()
        .WithContext()
        .WithId("https://linked.art/example/object/catalog/1")
        .WithLabel("Copy of Exhibition Catalog")
        .WithClassifiedAs(Aat.ExhibitionCatalog, Aat.TypeOfWork);

    catalog.Shows = [
        new VisualItem()
            .WithId("https://linked.art/example/visual/spring")
            .WithLabel("Visual Content of Spring"),
        new VisualItem()
            .WithId("https://linked.art/example/visual/houses")
            .WithLabel("Visual Content of Houses in Provence")
    ];

    catalog.Carries = [
        new LinguisticObject()
            .WithId("https://linked.art/example/text/catalogtext")
            .WithLabel("Exhibition Catalog Text")
    ];

    return catalog;
}

• Metatype classification The second argument classifies the first, not the object: WithClassifiedAs(Aat.Description, Aat.Statement) says this is a Description, and Description is a kind of Statement. The Plain C# form shows the nesting.

var humanMadeObject = new HumanMadeObject
{
    Context = ["https://linked.art/ns/v1/linked-art.json"],
    Id = "https://linked.art/example/object/catalog/1",
    Label = "Copy of Exhibition Catalog",
    Shows =
    [
        new VisualItem
        {
            Id = "https://linked.art/example/visual/spring",
            Label = "Visual Content of Spring",
        },
        new VisualItem
        {
            Id = "https://linked.art/example/visual/houses",
            Label = "Visual Content of Houses in Provence",
        },
    ],
    Carries =
    [
        new LinguisticObject
        {
            Id = "https://linked.art/example/text/catalogtext",
            Label = "Exhibition Catalog Text",
        },
    ],
    ClassifiedAs =
    [
        new Type("http://vocab.getty.edu/aat/300026096", "Exhibition Catalog")
        {
            ClassifiedAs = [Aat.TypeOfWork],
        },
    ],
};

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.