Important is related to Guard. Guard is a type of Defender. 
Salt is related to Kitchen. you are likely to find Knife in/at/on Kitchen. Knife can be Dangerous. Dangerous is a synonym of Critical. 
Important <--RelatedTo--> Guard --IsA--> Defender 
Salt <--RelatedTo--> Kitchen <--AtLocation-- Knife --HasProperty--> Dangerous <--Synonym--> Critical 