Complex sentence: In a press conference Marc Descheemaecker CEO of NMBS illustrated his arguments; a metallic strip affixed to the roof had come undone on a moving train and had bent upwards towards the overhead cables, a potentially dangerous situation.
Split into simpler sentences: In a press conference Marc Descheemaecker CEO of NMBS illustrated his arguments. A metallic strip affixed to the roof had come undone on a moving train and had bent upwards towards the overhead cables, a potentially dangerous situation.