Affair is a synonym of Thing. Cheese is a type of Thing. 
Ruin is related to Tourist. Tourist is related to Hotel. you are likely to find Elevator in/at/on Hotel. Elevator is related to Passenger. 
Affair <--Synonym--> Thing <--IsA-- Cheese 
Ruin <--RelatedTo--> Tourist <--RelatedTo--> Hotel <--AtLocation-- Elevator <--RelatedTo--> Passenger 