Fluid is a type of Substance. Fluid is related to Eye. Eye is related to Shade. Shade is related to Gift. 
World is a type of Class. World is related to Democracy. Democracy is related to Rule. Rule is the opposite of Submit. 
Substance <--IsA-- Fluid <--RelatedTo--> Eye <--RelatedTo--> Shade <--RelatedTo--> Gift 
Class <--IsA-- World <--RelatedTo--> Democracy <--RelatedTo--> Rule <--Antonym--> Submit 