Mind is a synonym of Concentration. Concentration is a type of Attention. 
Stone is related to Grave. Grave is related to Bed. Bedroom is derived from Bed. you are likely to find Radio in/at/on Bedroom. 
Mind <--Synonym--> Concentration --IsA--> Attention 
Stone <--RelatedTo--> Grave <--RelatedTo--> Bed <--DerivedFrom-- Bedroom <--AtLocation-- Radio 