Sentence 1: John got a puppy named Buddy for his birthday. 
 Sentence 3: John stayed up all night with Buddy to make sure he is ok 
 Sentence 4:  The next day, John took Buddy to the vet to get a checkup 
 Sentence 5:  The vet said Buddy will be back to normal in a few days 
 Given Sentence 2: Buddy got really sick one night after eating food from the trashcan.