Burn is related to Paper. Paper is the opposite of Pen. Pen is related to Instrument. Instrument is related to Musician. 
Pitcher is a type of Leaf. Pitcher is a type of Player. 
Burn <--RelatedTo--> Paper <--Antonym--> Pen <--RelatedTo--> Instrument <--RelatedTo--> Musician 
Leaf <--IsA-- Pitcher --IsA--> Player 