Unusual is a different concept from Normal. Normal is a synonym of Standard. Standard is related to Custom. 
Drink is related to Satisfy. Content is a type of Satisfy. Universe is a type of Content. Universe is a synonym of Population. 
Unusual <--DistinctFrom--> Normal <--Synonym--> Standard <--RelatedTo--> Custom 
Drink <--RelatedTo--> Satisfy <--IsA-- Content <--IsA-- Universe <--Synonym--> Population 