you are likely to find Beer in/at/on Boat. Boat is related to Steam. Steam is related to Wind. 
Senator is a type of Person. Person wants (to) Safe. Safe is related to Code. 
Beer --AtLocation--> Boat <--RelatedTo--> Steam <--RelatedTo--> Wind 
Senator --IsA--> Person --Desires--> Safe <--RelatedTo--> Code 