Charter is a type of License. License is a synonym of Permission. Permission is a type of Approval. Approval is derived from Approve. 
Sell is related to Product. Product is related to Silk. Silk is related to Elegant. 
Charter --IsA--> License <--Synonym--> Permission --IsA--> Approval --DerivedFrom--> Approve 
Sell <--RelatedTo--> Product <--RelatedTo--> Silk <--RelatedTo--> Elegant 