Complex sentence: The EMD DE30AC and EMD DM30AC are 46 locomotives built in 1997-1998 by Electro-Motive Diesel for the Long Island Rail Road of the Metropolitan Transportation Authority (MTA) in New York.
Split into simpler sentences: The EMD DE30AC and EMD DM30AC are locomotives built in 1997-1998 by Electro-Motive Diesel. In total, 46 of them were built, all for the Long Island Rail Road of the Metropolitan Transportation Authority (MTA) in New York.