[{
  "http://example/a": [{
    "http://example.com/c": [{"@value": "C in example.com"}],
    "http://example/b": [{
      "http://example.com/a": [{"@value": "A in example.com"}],
      "http://example.org/c": [{"@value": "C in example.org"}]
    }]
  }],
  "http://example/c": [{"@value": "C in example"}]
}]