proves that a nightmare is a wish a studio 's wallet makes . 
(ROOT (S (VP (VBZ proves) (SBAR (IN that) (S (NP (DT a) (NN nightmare)) (VP (VBZ is) (NP (NP (DT a) (NN wish)) (SBAR (S (NP (NP (DT a) (NN studio) (POS 's)) (NN wallet)) (VP (VBZ makes))))))))) (. .)))
(ROOT (S (VP (VBZ ) (SBAR (IN ) (S (NP (DT ) (NN )) (VP (VBZ ) (NP (NP (DT ) (NN )) (SBAR (S (NP (NP (DT ) (NN ) (POS )) (NN )) (VP (VBZ ))))))))) (. )))