Complex sentence: In addition, one 4-wheel railcar built by Brown Boveri of Switzerland exists out of service in the Asmara shops, which was apparently being used as a mobile generator car before the civil war.
Split into simpler sentences: In addition, one 4-wheel railcar built by Brown Boveri of Switzerland exists out of service in the Asmara shops. It was apparently being used as a mobile generator car before the civil war.