Sentence 1: On day I was on a very crowded metro system. 
 Sentence 3: As the crowd diminished and I could move, I checked my purse 
 Sentence 4:  To my disappointment, my phone and credit cards were no longer there 
 Sentence 5:  From then on I have been very cautious with my belongings 
 Given Sentence 2: He called a guy named Angel from Craigslist.