{
  "@context": {
    "http://example.org/test#property1": {"@type": "@id"},
    "http://example.org/test#property2": {"@type": "@id"},
    "http://example.org/test#property3": {"@type": "@id"},
    "uri": "@id"
  },
  "http://example.org/test#property1": {
    "http://example.org/test#property4": "foo",
    "uri": "http://example.org/test#example2"
  },
  "http://example.org/test#property2": "http://example.org/test#example3",
  "http://example.org/test#property3": "http://example.org/test#example4",
  "uri": "http://example.org/test#example1"
}
