Secret is related to Bed. Bed is related to Night. Night is part of Day. Anniversary is a type of Day. 
Dare is the opposite of Truth. Truth is related to Actual. Actual is similar to Effective. 
Secret <--RelatedTo--> Bed <--RelatedTo--> Night --PartOf--> Day <--IsA-- Anniversary 
Dare <--Antonym--> Truth <--RelatedTo--> Actual <--SimilarTo--> Effective 