json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "id": "http://footown.com/generic/person#",
      "type": "object",
      "required": [
          "firstname",
          "lastname"
      ],
      "properties": {
          "firstname": {
              "$ref": "#/definitions/name"
          },
          "lastname": {
              "$ref": "#/definitions/name"
          },
          "title": {
              "type": "string",
              "enum": [
                  "mr",
                  "mrs",
                  "ms",
                  "dr",
                  "prof"
              ]
          }
      },
      "definitions": {
          "name": {
              "type": "string",
              "minLength": 1
          }
      }
  }