you are likely to find Pump in/at/on Boat. Boat is related to Water. Water is related to Hurricane. 
Write is a synonym of Store. you are likely to find Pad in/at/on Store. Rat is a type of Pad. you are likely to find Rat in/at/on Laboratory. 
Pump --AtLocation--> Boat <--RelatedTo--> Water <--RelatedTo--> Hurricane 
Write <--Synonym--> Store <--AtLocation-- Pad <--IsA-- Rat --AtLocation--> Laboratory 