Complex sentence: The M7 is an electric multiple unit railroad car built by Bombardier, with delivery beginning in 2002, utilized by the MTA on the Long Island Rail Road (M7) and Metro-North Railroad (M7A).
Split into simpler sentences: The M7 is an electric multiple unit railroad car built by Bombardier, with delivery beginning in 2002. The cars were ordered by the Metropolitan Transportation Authority (New York) for the Long Island Rail Road (M7) and Metro-North Railroad (M7A).