(S (S (BASENP (NN Police)) (VP (VBP are) (VP (VBG investigating) (NP (NP (NP (BASENP (DT a) (NN shooting)) (PP (IN on) (NP (BASENP (NNP Buffalo) (POS 's)) (BASENP (NNP East) (NNP Side))))) (BASENP (JJ late) (NNP Saturday) (NN night))) (SBAR (WHNP (WDT which)) (S (VP (VP (VP (VBD left) (BASENP (NN one) (NN person))) (PP (IN in) (BASENP (JJ critical) (NN condition)))) (PP (IN at) (BASENP (DT a) (JJ local) (NN hospital)))))))))) (PERIOD .))