[
  {
    "@id": "http://example.org/id",
    "@type": ["http://example/type"],
    "http://example/a": [{
      "@id": "http://example.org/Foo",
      "@type": ["http://example/Foo"],
      "http://example/bar": [{"@id": "http://example.org/baz"}]
    }]
  }
]