Gross is similar to General. General is related to Metal. Metal is related to Magnetic. Aluminum cannot be Magnetic. 
Custody is related to Adopt. Adopt is the opposite of Own. Own is related to Opinion. Opinion is related to Certain. 
Gross <--SimilarTo--> General <--RelatedTo--> Metal <--RelatedTo--> Magnetic <--NotHasProperty-- Aluminum 
Custody <--RelatedTo--> Adopt <--Antonym--> Own <--RelatedTo--> Opinion <--RelatedTo--> Certain 