Complex sentence: Kvyat's brakes failed on lap 52, causing him to turn left to avoid hitting Räikkönen, and went onto an section of grass at the Rettifilo chicane, clipped a polystyrene marker and rejoined the track.
Split into simpler sentences: Kvyat's brakes failed on lap 52, causing him to turn left to avoid hitting Räikkönen. He went onto the grass at the Rettifilo chicane, clipping a polystyrene marker and rejoined the track.