Economic is related to Business. Business is a type of Organization. Organization is related to Band. 
Heat is related to Boil. Boil is related to Water. Water is related to Basement. Basement is related to Bottom. 
Economic <--RelatedTo--> Business --IsA--> Organization <--RelatedTo--> Band 
Heat <--RelatedTo--> Boil <--RelatedTo--> Water <--RelatedTo--> Basement <--RelatedTo--> Bottom 