{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Distance",
  "type": "object",
  "properties": {
    "value": {
      "type": "integer",
      "description": "great-circle distance between two locations. This distance thus do not take into account traffic conditions; international boundaries; mountains; water; or other elements that might make the a nearby location hard to reach."
    },
    "unit": {
      "type": "string",
      "description": "unit of the distance",
      "enum": [
        "KM",
        "MI"
      ]
    }
  }
}