json_schema: {
    "properties": {
      "dimensions": {
        "properties": {
          "base": {
            "description": "The base of the triangle",
            "type": "number"
          },
          "height": {
            "description": "The height of the triangle",
            "type": "number"
          },
          "length": {
            "description": "The length of the rectangle",
            "type": "number"
          },
          "radius": {
            "description": "The radius of the circle",
            "type": "number"
          },
          "width": {
            "description": "The width of the rectangle",
            "type": "number"
          }
        },
        "required": [
          "radius"
        ],
        "type": "object"
      },
      "shape": {
        "description": "The type of shape (e.g. circle, rectangle, triangle)",
        "type": "string"
      }
    },
    "required": [
      "shape",
      "dimensions"
    ],
    "type": "object"
  }