Screen is a type of Filter. Filter is the opposite of Ideal. Ideal is related to Thought. Thought is related to Consider. 
Taxpayer is derived from Tax. Tax is the opposite of Discount. Discount is related to Sale. 
Screen --IsA--> Filter <--Antonym--> Ideal <--RelatedTo--> Thought <--RelatedTo--> Consider 
Taxpayer --DerivedFrom--> Tax <--Antonym--> Discount <--RelatedTo--> Sale 