Complex sentence: On August 6,1945, Shima Hospital was completely destroyed by the atomic bombing of Hiroshima; the atomic bomb detonated right above the building and the blast was directed downwards.
Split into simpler sentences: On August 6,1945, Shima Hospital was destroyed by the atomic bombing of Hiroshima. It was completely destroyed on that day, as the atomic bomb detonated right above the building and the blast was directed downwards.