{
  "type": "object",
  "properties": {
    "distance_miles": {
      "type": "string",
      "description": "The distance of the route, in miles, as stated on the invoice."
    },
    "fuel_rate_per_mile": {
      "type": "string",
      "description": "The fuel rate per mile, labelled 'FUEL RATE' on the document, including currency. The value may be a whole number or a decimal number - if the number in the document is in decimal form, the extraction should give the value in decimal, exactly as mentioned in the document."
    },
    "total_fuel_cost": {
      "type": "string",
      "description": "The total fuel cost - calculated as the distance in miles multiplied by the fuel rate per mile. This value does NOT appear anywhere in the document; you must compute it from distance_miles x fuel_rate_per_mile."
    }
  },
  "required": [
    "distance_miles",
    "fuel_rate_per_mile",
    "total_fuel_cost"
  ]
}