Sentence 1: A lawyer reviewed some law books to help his client. 
 Sentence 3: He felt that his client was pretty much guilty 
 Sentence 4:  The lawyer closed the book and put it aside 
 Sentence 5:  He called the client and told him he quit 
 Option 1: he thorouhly reviewd all book but didnt find any clue for his client. 
 Option 2: He was not able to find anything that would work.