Complex sentence: The Third Ring (Russian: Третье транспортное кольцо, Третье кольцо) is Moscow's newest beltway, located between the Garden Ring in the city centre and Moscow Ring Road, which until the 1980s defined the Moscow city limits.
Split into simpler sentences: The Third Ring (Russian: Третье транспортное кольцо, Третье кольцо) is one of the Moscow beltways. The Garden Ring and Moscow Ring Road, which until the 1980's defined the Moscow city limits.