Sentence 1: Phil has heard that shaving his legs will make him swim faster. 
 Sentence 3: He shaves his legs and finds that he can swim much faster 
 Sentence 4:  Phil now is one of the fastest swimmers in town 
 Sentence 5:  He is happy that he tried shaving his legs 
 Given Sentence 2: While he does not want to shave, he wants to know if it works.