Serving is related to Pour. Pour is related to Liquid. Alcohol is a type of Liquid. Alcohol is related to Adult. 
Burn is related to Condition. Condition is related to Hospital. Hospital is related to Nurse. 
Serving <--RelatedTo--> Pour <--RelatedTo--> Liquid <--IsA-- Alcohol <--RelatedTo--> Adult 
Burn <--RelatedTo--> Condition <--RelatedTo--> Hospital <--RelatedTo--> Nurse 