Sentence 1: Sarah was sweeping her house one day. 
 Sentence 3: She began to sweep the mess out her open front door 
 Sentence 4:  While she was sweeping, a bird flew into her house 
 Sentence 5:  Sarah chased the bird from her home and closed her door 
 Option 1: She vacuumed up the pile of dust. 
 Option 2: After sweeping, she swept the mess in a pile by her door.