Task: Question Generation
Input (English): Sediment becomes loose from the rest of the soil. The sediment rolls down hill towards a river. The heavy items sink to the bottom. The lighter items float on the top and in convection cycles. As the river flows the sediment is moved. The sediment gets dumped through tributaries into lakes and the ocean. The sediment keeps moving around the world in convection currents. 
Output (English): How is sediment transported across the Earth?