Fatigue is similar to Duty. Duty is related to Type. Type is related to Swim. Swim is related to Lap. 
Launch is a synonym of Establish. Introduce is a type of Establish. Introduce is a synonym of Present. Present is related to Eat. 
Fatigue <--SimilarTo--> Duty <--RelatedTo--> Type <--RelatedTo--> Swim <--RelatedTo--> Lap 
Launch <--Synonym--> Establish <--IsA-- Introduce <--Synonym--> Present <--RelatedTo--> Eat 