{
  "@context": {
    "dc": "http://purl.org/dc/elements/1.1/",
    "ex": "http://example.org/vocab#"
  },
  "@graph": [{
    "@id": "http://example.org/test/#library",
    "@type": [
      "ex:Library",
      "ex:Building"
    ],
    "ex:contains": {
      "@id": "http://example.org/test#book",
      "@type": "ex:Book",
      "dc:contributor": "Writer",
      "dc:title": "My Book",
      "ex:contains": {
        "@id": "http://example.org/test#chapter",
        "@type": "ex:Chapter",
        "dc:description": "Fun",
        "dc:title": "Chapter One"
      }
    }
  }]
}