{
  "type": "object",
  "properties": {
    "age": { "$ref": "../definitions/age.json#" },
    "weight": { "$ref": "../definitions/weight.json" },
    "height": { "$ref": "#/definitions/height" }
  },
  "definitions": {
    "height": { "type": "integer", "minimum": 5 }
  }
}