Complex sentence: On April 15,1978, an accident involved units E645.016 and E636.282 in Murazze di Vado (Bologna): the train hauled by these two locomotives derailed on a landslided tract and ended poised over a slope.
Split into simpler sentences: On April 15,1978, an accident involved units E645.016 and E636.282 in Murazze di Vado (Bologna). The train hauled by these two locomotives derailed due to damage to the line caused by a landslide, and ended poised over a slope.