Index is a synonym of Inventory. Inventory is a synonym of Stock. Stock can be Risky. 
Import is a type of Foreigner. Import is related to Advantage. Advantage is related to Odds. Odds is derived from Odd. 
Index <--Synonym--> Inventory <--Synonym--> Stock --HasProperty--> Risky 
Foreigner <--IsA-- Import <--RelatedTo--> Advantage <--RelatedTo--> Odds --DerivedFrom--> Odd 