[
  {
    "@id": "http://data.wikipedia.org/snaks/Assertions",
    "@type": "http://data.wikipedia.org/vocab#SnakSet",
    "http://data.wikipedia.org/vocab#assertedBy": [
      { "@value": "Gregg Kellogg" }
    ],
    "@graph": [
      {
        "@id": "http://data.wikipedia.org/snaks/BerlinFact",
        "@type": [ "http://data.wikipedia.org/vocab#Snak" ],
        "http://data.wikipedia.org/vocab#assertedBy": [ { "@value": "Statistik Berlin/Brandenburg" } ],
        "@graph": [
          {
            "@id": "http://en.wikipedia.org/wiki/Berlin",
            "http://data.wikipedia.org/vocab#population": [ 3499879 ]
          }
        ]
      }
    ]
  }
]
