Complex sentence: A Kawasaki C151 train ran into and killed two SMRT Trains trainee track workers at 60 km/h, who were working on a track signalling issue at that time as part of a team of 15 track personnel.
Split into simpler sentences: A Kawasaki C151 train ran into two SMRT Trains trainee track workers at 60 km/h, which resulted in their deaths. The two deceased workers were working on a track signalling issue at that time as part of a team of 15 track personnel.