Type is related to Money. Money is related to Loan. Loan is related to Interest. Interest is related to Income. 
Bag is related to Sock. Sock is related to Thing. Earth is a type of Thing. Earth is a type of Location. 
Type <--RelatedTo--> Money <--RelatedTo--> Loan <--RelatedTo--> Interest <--RelatedTo--> Income 
Bag <--RelatedTo--> Sock <--RelatedTo--> Thing <--IsA-- Earth --IsA--> Location 