Costume is related to Clothes. Clothes is related to Sleeve. Elbow is part of Sleeve. 
Boss is related to President. President is related to Office. Office is related to Boring. 
Costume <--RelatedTo--> Clothes <--RelatedTo--> Sleeve <--PartOf-- Elbow 
Boss <--RelatedTo--> President <--RelatedTo--> Office <--RelatedTo--> Boring 