Ambassador is related to Government. Government is related to District. District is related to Political. 
Resident is related to Servant. Servant is the opposite of Man. Man is the opposite of Slave. you are likely to find Slave in/at/on South. 
Ambassador <--RelatedTo--> Government <--RelatedTo--> District <--RelatedTo--> Political 
Resident <--RelatedTo--> Servant <--Antonym--> Man <--Antonym--> Slave --AtLocation--> South 