Sentence 1: During the war, Dave was ordered to stop an enemy train. 
 Sentence 3: The train came rushing at the chains 
 Sentence 4:  Dave watched as the train broke through all the chains 
 Sentence 5:  Dave was sad that his plan did not work 
 Option 1: The train never came though. 
 Option 2: He strung a set of chains across the tracks and waited.