Sentence 1: Joe bought a brand new boat. 
 Sentence 3: In his excitement he dropped the keys, while signing the final papers 
 Sentence 4:  After a brief moment of fear, Joe found the keys on the dock 
 Sentence 5:  Joe breathed a sigh of relief as he headed home to see his friends 
 Given Sentence 2: He was very excited to show it off to all of his friends.