3D Model: Generate A Highly Detailed 3D Printable Model Of The White House, The Official Residence Of The President Of The United States, With Accurate Architectural Features And Realistic Proportions. Scale The Height To 20 Centimeters, And Adjust The Width And Depth According To The Real-world Proportions Of The White House. Ensure The Model Is Watertight And Optimized For 3D Printing In STL Format. Do Not Include The Surrounding Grounds Or Trees — Only The Building Itself, With Clean Geometry Suitable For Resin Or FDM Printing.