Part is a type of Relation. Possession is a type of Relation. Possession is a synonym of Ownership. Ownership is related to Adopt. 
Killing can cause/lead to Horrible. Horrible is the opposite of Nice. Nice is the opposite of Awful. 
Part --IsA--> Relation <--IsA-- Possession <--Synonym--> Ownership <--RelatedTo--> Adopt 
Killing --Causes--> Horrible <--Antonym--> Nice <--Antonym--> Awful 