's episode of behind the music 
(ROOT (NP (NP (NP (POS 's)) (NN episode)) (PP (IN of) (PP (IN behind) (NP (DT the) (NN music))))))
(ROOT (NP (NP (NP (POS )) (NN )) (PP (IN ) (PP (IN ) (NP (DT ) (NN ))))))