may be burns 's strongest film since the brothers mcmullen . 
(ROOT (S (VP (MD may) (VP (VB be) (NP (NP (NP (NNS burns) (POS 's)) (JJS strongest) (NN film)) (PP (IN since) (NP (DT the) (NNS brothers) (NNP mcmullen)))))) (. .)))
(ROOT (S (VP (MD ) (VP (VB ) (NP (NP (NP (NNS ) (POS )) (JJS ) (NN )) (PP (IN ) (NP (DT ) (NNS ) (NNP )))))) (. )))