Sentence 1: Ally and her friends were gathered around the firepit. 
 Sentence 3: Each of them had a stick with a marshmallow cooking over the flame 
 Sentence 4:  They toasted them carefully to make sure they didn't get burned 
 Sentence 5:  When they were perfect, they took them off and ate them 
 Given Sentence 2: Their parents had set it up for them to toast marshmallows.