Sentence 1: Tom had fallen asleep while smoking a cigarette. 
 Sentence 3: He rolled around but only set the bed on fire too 
 Sentence 4:  Soon the fire turned into an inferno 
 Sentence 5:  Luckily everybody else got out of the apartment alive 
 Option 1: When he woke up a few minutes later his shirt was on fire. 
 Option 2: When he woke up the cigarette was wet.