Pulsing Lamp and Floating Clouds GIF

Make me a gif from this image. The light from the lamp will slowly pulse a little, some lights will turn on and off in the houses outside the window, and clouds will float in the sky. The gif should have an infinite loop. I need the three books to remain as they are, the project folder, the monitor, and the floppy drive as well. Also, keep the aspect ratio of the source image.