Minimize is a type of Decrease. Break is a type of Decrease. Break is part of Pool. you are likely to find Pool in/at/on Gym. 
Medal is related to Victory. Victory is the opposite of Loss. 
Minimize --IsA--> Decrease <--IsA-- Break --PartOf--> Pool --AtLocation--> Gym 
Medal <--RelatedTo--> Victory <--Antonym--> Loss 