Event is related to Birthday. Birthday is related to Surprise. Surprise is the opposite of Expect. Expect is related to Outcome. 
Board is related to Home. Home is related to Wall. Wall is related to Hang. 
Event <--RelatedTo--> Birthday <--RelatedTo--> Surprise <--Antonym--> Expect <--RelatedTo--> Outcome 
Board <--RelatedTo--> Home <--RelatedTo--> Wall <--RelatedTo--> Hang 