Brief is a type of Outline. Brief is related to Statement. Announcement is a type of Statement. Announcement is related to Birth. 
Vitamin is a type of Nutrient. Nutrient is a synonym of Food. Food is related to Oil. 
Outline <--IsA-- Brief <--RelatedTo--> Statement <--IsA-- Announcement <--RelatedTo--> Birth 
Vitamin --IsA--> Nutrient <--Synonym--> Food <--RelatedTo--> Oil 