Fever is a different concept from Cold. Cold is related to Wind. Wind is related to Characteristic. Recommendation is a type of Characteristic. 
you would Work because Useful. Work is related to Animal. Animal is related to Shark. Shark is related to Predator. 
Fever <--DistinctFrom--> Cold <--RelatedTo--> Wind <--RelatedTo--> Characteristic <--IsA-- Recommendation 
Useful <--MotivatedByGoal-- Work <--RelatedTo--> Animal <--RelatedTo--> Shark <--RelatedTo--> Predator 