Wonderful is the opposite of Terrible. Terrible is a synonym of Severe. Severe is a synonym of Brutal. Brutal is a synonym of Cruel. 
Stage is related to Center. Center is related to Factory. Factory is related to Area. Area is related to Pool. 
Wonderful <--Antonym--> Terrible <--Synonym--> Severe <--Synonym--> Brutal <--Synonym--> Cruel 
Stage <--RelatedTo--> Center <--RelatedTo--> Factory <--RelatedTo--> Area <--RelatedTo--> Pool 