Hidden is a synonym of Dark. Dress can be Dark. Coat is a type of Dress. 
Rating is derived from Rate. Rate is related to Loan. Loan is related to Mortgage. Mortgage is related to Big. 
Hidden <--Synonym--> Dark <--HasProperty-- Dress <--IsA-- Coat 
Rating --DerivedFrom--> Rate <--RelatedTo--> Loan <--RelatedTo--> Mortgage <--RelatedTo--> Big 