Complex sentence: The X'Trapolis 100 is a single deck electric passenger train, one of Alstom's X'Trapolis family of trains, used in Melbourne, Australia and Valparaíso, Chile.
Split into simpler sentences: The X'Trapolis 100 is a single deck electric multiple unit. It is part of Alstom's X'Trapolis family of trains, and is operated in Melbourne, Australia and Valparaíso, Chile.