Sentence 1: Jo was riding a motorcycle with her friend. 
 Sentence 3: She hit a pothole all of a sudden 
 Sentence 4:  The motorcycle flipped on the side 
 Sentence 5:  Jo hit her head and had a concussion 
 Option 1: She was going too fast down the gravel road but will never have a concussion. 
 Option 2: She was going too fast down the gravel road.