Crisis is related to Time. Time is related to Bell. Ring can be used for Bell. Ring can cause/lead to Sound. 
Employer is a type of Leader. Employer is derived from Employ. Employ is the opposite of Fire. Fire is a type of Bake. 
Crisis <--RelatedTo--> Time <--RelatedTo--> Bell <--UsedFor-- Ring --Causes--> Sound 
Leader <--IsA-- Employer --DerivedFrom--> Employ <--Antonym--> Fire --IsA--> Bake 