Emphasis is a synonym of Stress. Stress can cause/lead to Headache. 
Resource is related to Fuel. Food is a type of Fuel. Food is related to Dinner. Dinner is related to Manner. 
Emphasis <--Synonym--> Stress --Causes--> Headache 
Resource <--RelatedTo--> Fuel <--IsA-- Food <--RelatedTo--> Dinner <--RelatedTo--> Manner 