Head is related to President. President is related to Bill. Bill is related to Legislation. 
Leaf is related to Color. Color is related to Appearance. Appearance is a synonym of Look. Look is a synonym of Await. 
Head <--RelatedTo--> President <--RelatedTo--> Bill <--RelatedTo--> Legislation 
Leaf <--RelatedTo--> Color <--RelatedTo--> Appearance <--Synonym--> Look <--Synonym--> Await 