Sentence 1: Abigail bought her friend Jenny a simple birthday card. 
 Sentence 3: She added a note for Abigail and gave it back for her birthday 
 Sentence 4:  Every year the two friends passed the card back and forth 
 Sentence 5:  Many years later the card was covered in notes from their friendship 
 Given Sentence 2: Jenny loved the card so much that she saved it.