Complex sentence: On the South African Railways (SAR) narrow gauge lines, that solution was found in 1914, when orders were placed with Beyer, Peacock and Company for a narrow gauge Garratt locomotive, which was to become the first Garratt to enter SAR service.
Split into simpler sentences: On the South African Railways (SAR) narrow gauge lines, that solution was found in 1914 when orders were placed with Beyer, Peacock and Company for a narrow gauge Garratt locomotive. It was to become the first Garratt to enter SAR service.