Big is related to Farm. you are likely to find Cattle in/at/on Farm. Cattle is related to Farmer. 
Investigation is related to Detective. Detective is related to Crime. Attack is a type of Crime. 
Big <--RelatedTo--> Farm <--AtLocation-- Cattle <--RelatedTo--> Farmer 
Investigation <--RelatedTo--> Detective <--RelatedTo--> Crime <--IsA-- Attack 