Big is related to Earth. Earth is related to Planet. Planet is related to Core. 
Chance is a synonym of Prospect. Prospect is a type of Potential. Potential is a synonym of Spirit. Spirit is a synonym of Ghost. 
Big <--RelatedTo--> Earth <--RelatedTo--> Planet <--RelatedTo--> Core 
Chance <--Synonym--> Prospect --IsA--> Potential <--Synonym--> Spirit <--Synonym--> Ghost 