Complex sentence: The line, which is part of the Northern Railway and is made with a gauge, was planned in May 1926 and commissioned in 1929 and is popularly known as the "Kangra Toy Train".
Split into simpler sentences: The line, which is part of the Northern Railway and is made with a gauge, was planned in May 1926 and commissioned in 1929. It is popularly known as the "Kangra Toy Train".