Sentence 1: Annie and Sarah were at the lake. 
 Sentence 3: Annie thought that it would be funny to prank her 
 Sentence 4:  She smacked Sarah's sunburn sharply 
 Sentence 5:  Sarah cried out in pain and Annie realized she had gone too far 
 Option 1: Sarah was driving Annie nuts because she was using a huge sun umbrella wherever she went. 
 Option 2: Sarah had gotten a really bad sunburn during the day.