Trait is related to Experience. Experience is related to Trip. Trip is related to Acid. Acid is a type of Drug. 
Sound is related to Barrier. Barrier is a type of Obstacle. Obstacle is the opposite of Benefit. Sake is a type of Benefit. 
Trait <--RelatedTo--> Experience <--RelatedTo--> Trip <--RelatedTo--> Acid --IsA--> Drug 
Sound <--RelatedTo--> Barrier --IsA--> Obstacle <--Antonym--> Benefit <--IsA-- Sake 