Director is a type of Person. Passenger is a type of Person. Passenger is related to Elevator. 
Regret is related to Should. Should is the opposite of Must. Must is related to Fate. Fate is related to Destination. 
Director --IsA--> Person <--IsA-- Passenger <--RelatedTo--> Elevator 
Regret <--RelatedTo--> Should <--Antonym--> Must <--RelatedTo--> Fate <--RelatedTo--> Destination 