Sentence 1: Andy wants to become a stand up comedian. 
 Sentence 3: He often practiced in front of his friends 
 Sentence 4:  An acquaintance arranged for him to perform at a local bar 
 Sentence 5:  That weekend Andy performed in front of an audience of thirty 
 Option 1: He is a natural and does not need to practice. 
 Option 2: He spent many weeks perfecting his jokes.