Driver is related to Race. Race is related to Do. Do is related to Present. 
Cigarette is related to Lung. Lung is related to Breath. Breath is related to Nose. Nose is related to Sensor. 
Driver <--RelatedTo--> Race <--RelatedTo--> Do <--RelatedTo--> Present 
Cigarette <--RelatedTo--> Lung <--RelatedTo--> Breath <--RelatedTo--> Nose <--RelatedTo--> Sensor 