Whole is a type of Concept. Assembly is a type of Whole. Assembly is a synonym of Meeting. Arena can be used for Meeting. 
Dog is a type of Thing. Dog is related to Minister. Minister is related to Prime. 
Concept <--IsA-- Whole <--IsA-- Assembly <--Synonym--> Meeting <--UsedFor-- Arena 
Thing <--IsA-- Dog <--RelatedTo--> Minister <--RelatedTo--> Prime 