Stress can be Epidemic. Stress is related to Work. Work is related to Lunch. 
Essential is a synonym of Crucial. Crucial is related to Important. Reading can be Important. Reading requires Education. 
Epidemic <--HasProperty-- Stress <--RelatedTo--> Work <--RelatedTo--> Lunch 
Essential <--Synonym--> Crucial <--RelatedTo--> Important <--HasProperty-- Reading --HasPrerequisite--> Education 