Speculation is a type of Investment. Speculation is a synonym of Venture. Venture is a synonym of Hazard. 
Farmer is related to Barn. you are likely to find Goat in/at/on Barn. 
Investment <--IsA-- Speculation <--Synonym--> Venture <--Synonym--> Hazard 
Farmer <--RelatedTo--> Barn <--AtLocation-- Goat 