Sentence 1: Charles needed to buy a cheap pair of shoes. 
 Sentence 3: He looked at all of the sneakers on the wall 
 Sentence 4:  He found a pair that cost twenty five dollars 
 Sentence 5:  They had a Napster logo on the bottom so Charles bought them 
 Option 1: He did not know where to buy the shoes. 
 Option 2: He went to the big five sporting goods store.