Week is the opposite of Strong. Strong is related to Horse. Horse can Swim. Swim is related to Fitness. 
Soap is related to Item. Item is related to Individual. 
Week <--Antonym--> Strong <--RelatedTo--> Horse --CapableOf--> Swim <--RelatedTo--> Fitness 
Soap <--RelatedTo--> Item <--RelatedTo--> Individual 