{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "properties": {
    "cars": {
      "type": "array",
      "items": {
        "$ref": "#car"
      }
    }
  },
  "definitions": {
    "car": {
      "$id": "#car",
      "type": "object",
      "properties": {
        "model": {
          "type": "string"
        },
        "manufacturer": {
          "$ref": "#manufacturer"
        }
      },
      "required": [
        "model",
        "manufacturer"
      ]
    },
    "manufacturer": {
      "$id": "#manufacturer",
      "type": "object",
      "properties": {
        "name": {
          "type": "string"
        },
        "factories": {
          "type": "array",
          "items": {
            "$ref": "#factory"
          }
        }
      }
    },
    "factory": {
      "$id": "#factory",
      "type": "object",
      "properties": {
        "location": {
          "$ref": "#location"
        }
      }
    },
    "location": {
      "$id": "#location",
      "type": "object",
      "properties": {
        "country": {
          "type": "string"
        },
        "city": {
          "type": "string"
        },
        "employees": {
          "type": "array",
          "items": {
            "$ref": "#employee"
          }
        }
      },
      "additionalProperties": false
    },
    "employee": {
      "$id": "#employee",
      "type": "object",
      "properties": {
        "name": {
          "type": "string"
        },
        "surname": {
          "type": "string"
        }
      },
      "additionalProperties": true,
      "maxProperties": 3
    }
  }
}