Sentence 1: The children laughed as it started raining on them. 
 Sentence 3: Nora looked aghast through the door and prepared to yell at them 
 Sentence 4:  She paused when she realized how much ridiculous fun they were having 
 Sentence 5:  Nora decided to laugh at their antics and to join them, instead 
 Given Sentence 2: We were running the half mile in gym class.