Case is related to Housing. Camp is a type of Housing. you would Camp because Entertainment. Soap can be used for Entertainment. 
Minute is the opposite of Hour. Midnight is a type of Hour. 
Case <--RelatedTo--> Housing <--IsA-- Camp --MotivatedByGoal--> Entertainment <--UsedFor-- Soap 
Minute <--Antonym--> Hour <--IsA-- Midnight 