Sentence 1: Bob groggily poured a bowl of cereal. 
 Sentence 3: He'd forgotten to put a new carton in the fridge so it'd be cold 
 Sentence 4:  Bob put a container of room temperature rice milk into the freezer 
 Sentence 5:  After half an hour it was cold enough to have on his cereal 
 Given Sentence 2: He discovered a very old trail that led to a rundown shack.