Complex sentence: The rolling stock was sold to other Italian railways, mainly to Sicily, and a legend tells that tracks were dismounted to be transported to Abyssinia, then an Italian colony, but never reached Africa as the ship sunk somewhere in the Mediterranean Sea.
Split into simpler sentences: The rolling stock was sold to other Italian railways, mainly to Sicily, tracks were dismounted to be transported to Abyssinia, then an Italian colony. But they never reached Africa as the ship sunk somewhere in the Mediterranean Sea.