json_schema: {
    "properties": {
      "point_a": {
        "properties": {
          "latitude": {
            "description": "The latitude of point A",
            "type": "number"
          },
          "longitude": {
            "description": "The longitude of point A",
            "type": "number"
          }
        },
        "required": [
          "latitude",
          "longitude"
        ],
        "type": "object"
      },
      "point_b": {
        "properties": {
          "latitude": {
            "description": "The latitude of point B",
            "type": "number"
          },
          "longitude": {
            "description": "The longitude of point B",
            "type": "number"
          }
        },
        "required": [
          "latitude",
          "longitude"
        ],
        "type": "object"
      }
    },
    "required": [
      "point_a",
      "point_b"
    ],
    "type": "object"
  }