Small is related to Seed. Seed is the opposite of Full. Full is the opposite of Hunger. 
Explosion can cause/lead to Death. Passing is a type of Death. Passing is related to Month. Month is related to Time. 
Small <--RelatedTo--> Seed <--Antonym--> Full <--Antonym--> Hunger 
Explosion --Causes--> Death <--IsA-- Passing <--RelatedTo--> Month <--RelatedTo--> Time 