Fisherman is related to Boat. Boat is related to Friendship. Friendship is related to Mate. Mate is the opposite of Captain. 
Male is related to Husband. Husband is related to Marriage. 
Fisherman <--RelatedTo--> Boat <--RelatedTo--> Friendship <--RelatedTo--> Mate <--Antonym--> Captain 
Male <--RelatedTo--> Husband <--RelatedTo--> Marriage 