Complex sentence: The fastest train operated by the PNR on the North Main Line was the Ilocos Special (Train 26), started in 1973, this diesel multiple-unit (DMU) train took four hours to run the 195 kilometres between Manila and Dagupan City.
Split into simpler sentences: The fastest train operated by the PNR on the North Main Line was the Ilocos Special (Train 26) during the 1970s. This diesel multiple-unit (DMU) train took four hours to run the 195 kilometres between Manila and Dagupan City.