Stress can be Epidemic. Stress is a type of Phenomenon. Phenomenon is related to Appear. Appear is a synonym of Look. 
Implication is a type of Accusation. Implication is a synonym of Significance. Significance is a type of Importance. Importance is related to Chief. 
Epidemic <--HasProperty-- Stress --IsA--> Phenomenon <--RelatedTo--> Appear <--Synonym--> Look 
Accusation <--IsA-- Implication <--Synonym--> Significance --IsA--> Importance <--RelatedTo--> Chief 