{
  "title": "Location",
  "type": "object",
  "anyOf": [
    {
      "title": "City",
      "properties": {
        "city": {
          "type": "string"
        }
      },
      "required": [
        "city"
      ]
    },
    {
      "title": "Coordinates",
      "properties": {
        "lat": {
          "type": "number"
        },
        "lon": {
          "type": "number"
        }
      },
      "required": [
        "lat",
        "lon"
      ]
    }
  ]
}