Lung is related to Cigarette. Cigarette can cause/lead to Fire. Fire is related to Ash. 
Serving is related to Rule. Rule is related to Head. Head is related to Face. Face is related to Slap. 
Lung <--RelatedTo--> Cigarette --Causes--> Fire <--RelatedTo--> Ash 
Serving <--RelatedTo--> Rule <--RelatedTo--> Head <--RelatedTo--> Face <--RelatedTo--> Slap 