Sentence 1: Klondike got run over by a car. 
 Sentence 3: The tree had fallen during a storm the night before 
 Sentence 4:  Seeing an escape, Klondike burst through the fence 
 Sentence 5:  He ran toward the road, where a huge truck hit him 
 Option 1: He tore down a wooden fence that had been broken by a tree. 
 Option 2: He tore down a wooden fence that had been broken by a fallen telephone poll.