{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$ref": "#/definitions/Quantity",
  "definitions": {
    "Quantity": {
      "type": "object",
      "properties": {
        "value": {
          "type": "number",
          "description": "Numeric value"
        },
        "unit": {
          "type": "string",
          "description": "Unit of measure (e.g. \"sqft\", \"vehicles\", \"employees\")"
        },
        "system": {
          "type": "string",
          "description": "Code system URI for the unit.",
          "format": "uri"
        },
        "code": {
          "type": "string",
          "description": "Coded form of the unit"
        }
      },
      "required": [
        "value"
      ],
      "additionalProperties": false,
      "description": "A quantity with a value and unit.",
      "examples": [
        {
          "value": 50000,
          "unit": "sqft"
        }
      ]
    }
  },
  "$id": "https://bind-standard.org/schema/Quantity",
  "title": "Quantity"
}