Sentence 1: I've always wanted to be able to dunk a basketball. 
 Sentence 3: I only need about two more inches to successfully dunk a ball 
 Sentence 4:  I worked out my legs hard for a month and added height to my vertical 
 Sentence 5:  Now I can dunk a basketball easily every time! 
 Given Sentence 2: I can touch the rim but I can't quite get the ball over the rim.