Complex sentence: After Katniss gets too close to the edge of the arena, Seneca Crane, the Gamemaker, orders a forest fire ignited to drive her back; she escapes, but suffers a severe burn on her leg.
Split into simpler sentences: After Katniss gets too close to the edge of the arena, Seneca Crane, the Gamemaker, orders a forest fire ignited to drive her back. She escapes, but suffers a severe burn on her leg.