Hunger is related to Stomach. you are likely to find Acid in/at/on Stomach. Acid can be Fun. Fun is related to Christmas. 
Cocaine is a type of Drug. Cocaine is a type of Chemical. Fraction is a type of Chemical. 
Hunger <--RelatedTo--> Stomach <--AtLocation-- Acid --HasProperty--> Fun <--RelatedTo--> Christmas 
Drug <--IsA-- Cocaine --IsA--> Chemical <--IsA-- Fraction 