Music is related to Concert. Concert is related to Show. Show is related to Comedy. 
Useful is related to Practical. Practical is related to Invention. Invention is related to Thought. Thought is related to Cognitive. 
Music <--RelatedTo--> Concert <--RelatedTo--> Show <--RelatedTo--> Comedy 
Useful <--RelatedTo--> Practical <--RelatedTo--> Invention <--RelatedTo--> Thought <--RelatedTo--> Cognitive 