Irony is related to Humor. Humor is related to Joke. Life is a type of Joke. Life is related to Dream. 
Staff is related to Note. Note is related to Currency. Currency is related to Gold. Gold is related to Material. 
Irony <--RelatedTo--> Humor <--RelatedTo--> Joke <--IsA-- Life <--RelatedTo--> Dream 
Staff <--RelatedTo--> Note <--RelatedTo--> Currency <--RelatedTo--> Gold <--RelatedTo--> Material 