Requirement is a type of Mandate. Requirement is related to Do. Do is related to Impossible. Impossible is related to Tv. 
Club is related to Golf. Golf is related to Egg. Egg can be White. 
Mandate <--IsA-- Requirement <--RelatedTo--> Do <--RelatedTo--> Impossible <--RelatedTo--> Tv 
Club <--RelatedTo--> Golf <--RelatedTo--> Egg --HasProperty--> White 