Sentence 1: Jack received a puppy for his seventh birthday. 
 Sentence 3: One day on their walk without a leash, Sippy ran away 
 Sentence 4:  Jack looked and yelled for zippy as the hours went by 
 Sentence 5:  He eventually caught up to Zippy and learned to use a leash 
 Given Sentence 2: He named the puppy Zippy because he could run fast.