Upset is the opposite of Happy. Happy is a synonym of Suitable. 
Swim is related to Example. Example is related to Demonstration. Demonstration is a synonym of Presentation. Presentation is a synonym of Assignment. 
Upset <--Antonym--> Happy <--Synonym--> Suitable 
Swim <--RelatedTo--> Example <--RelatedTo--> Demonstration <--Synonym--> Presentation <--Synonym--> Assignment 