{
  "@context": "http://www.w3.org/ns/anno.jsonld",
  "id": "http://example.org/anno21",
  "type": "Annotation",
  "body": {
    "type": "SpecificResource",
    "purpose": "tagging",
    "source": "http://example.org/city1"
  },
  "target": {
    "id": "http://example.org/photo1",
    "type": "Image"
  }
}