Complex sentence: Djamhari tried in vain to chase KA 225 while flapping the red flag with the train moving at 50 km/h. Two crowded trains collided on that Monday morning at Km +18.75.
Split into simpler sentences: Djamhari tried in vain to chase KA 225 while waving the red flag as the train moved at 50km/h. The two crowded trains collided on that Monday morning at Km +18.75.