Marriage is related to Propose. Propose is related to Reason. Speculate is a type of Reason. Speculate is a synonym of Reflect. 
Shop is a synonym of Garage. you are likely to find Trunk in/at/on Garage. you are likely to find Tire in/at/on Trunk. Retire is a type of Tire. 
Marriage <--RelatedTo--> Propose <--RelatedTo--> Reason <--IsA-- Speculate <--Synonym--> Reflect 
Shop <--Synonym--> Garage <--AtLocation-- Trunk <--AtLocation-- Tire <--IsA-- Retire 