{
  "catalog": {
    "@updated": "2026-02-01",
    "book": [
      {
        "@id": "b1",
        "title": "Dune",
        "price": "9.99"
      },
      {
        "@id": "b2",
        "title": "Emma",
        "price": "5.50"
      },
      {
        "@id": "b3",
        "title": "Ulysses",
        "price": "12.00"
      }
    ]
  }
}
