Sentence 1: Amy and Beth were playing in Beth's yard. 
 Sentence 3: As dusk arrived fireflies came out 
 Sentence 4:  Beth ran and grabbed jars to catch them in 
 Sentence 5:  The girls laughed as they ran and caught fireflies 
 Option 1: The girls didn't notice the sun was setting. 
 Option 2: The girls didn't notice a storm on the horizon.