Emergency is a type of Crisis. Emergency is a type of Hazard. Hazard is a synonym of Venture. Venture is a synonym of Guess. 
Evidence is related to Theory. Theory is related to Grand. Grand is related to Great. 
Crisis <--IsA-- Emergency --IsA--> Hazard <--Synonym--> Venture <--Synonym--> Guess 
Evidence <--RelatedTo--> Theory <--RelatedTo--> Grand <--RelatedTo--> Great 