Sentence 1: Bob was on a business trip. 
 Sentence 3: Bob could not sleep due to hearing police sirens all night 
 Sentence 4:  He arrived at his business meeting extremely tired 
 Sentence 5:  Bob fell asleep many times at his meeting due to his lack of sleep 
 Option 1: He was staying at a very low quality hotel. 
 Option 2: There were bed bugs under his mattress.