Economic is related to Depression. Stress can cause/lead to Depression. Stress is a synonym of Accent. 
Switch is a type of Control. Control is related to Possession. Possession is a type of District. District is related to Municipal. 
Economic <--RelatedTo--> Depression <--Causes-- Stress <--Synonym--> Accent 
Switch --IsA--> Control <--RelatedTo--> Possession --IsA--> District <--RelatedTo--> Municipal 