Back is related to Animal. Animal is related to Party. 
World can be Diverse. you are likely to find Creature in/at/on World. Creature is the opposite of Boat. Boat is related to Marine. 
Back <--RelatedTo--> Animal <--RelatedTo--> Party 
Diverse <--HasProperty-- World <--AtLocation-- Creature <--Antonym--> Boat <--RelatedTo--> Marine 