Works is related to Steel. Steel is a type of Cover. Bread is a type of Cover. 
Credit is a type of Account. Credit is related to Apply. Apply is a synonym of Enforce. Enforcement is derived from Enforce. 
Works <--RelatedTo--> Steel --IsA--> Cover <--IsA-- Bread 
Account <--IsA-- Credit <--RelatedTo--> Apply <--Synonym--> Enforce <--DerivedFrom-- Enforcement 