[
  {
    "@id": "http://example.com/a",
    "@type": [
      "http://example.com/b"
    ]
  },
  {
    "@id": "http://example.com/c",
    "@type": [
      "http://example.com/d",
      "http://example.com/e"
    ]
  },
  {
    "@id": "http://example.com/f",
    "@type": [
      "http://example.com/g"
    ]
  }
]