Sentence 1: Chris had an older brother that raced motorcycles. 
 Sentence 3: Chris decided to race motorcycles also 
 Sentence 4:  Chris fell in love with riding bikes outdoors and off-road 
 Sentence 5:  Chris became an excellent motocross racer over time 
 Option 1: Chris looked up to his older brother. 
 Option 2: He had an accident.