Sentence 1: Brad was on a picnic with his family. 
 Sentence 3: Before they had a chance to eat, a large noise startled them 
 Sentence 4:  A bear had crept up behind them and was sniffing at the food 
 Sentence 5:  Brad and his family ran away and left the food for the bear 
 Given Sentence 2: He convinced his friend Jacob to go with him the first time.