(S (S (BASENP (NNP Williams)) (VP (ADVP (RB allegedly)) (VP (VP (VBD told) (BASENP (NN police))) (SBAR (IN that) (S (BASENP (NNP Tyrel)) (VP (VBD said) (SBAR (S (NP (BASENP (PRPD his) (JJ 18-year-old) (NN brother)) (PRN (COMMA ,) (BASENP (NNP Troy) (NNP Lavalle) (NNP Hill)) (COMMA ,))) (VP (VBD was) (BASENP (PRPD their) (NN killer))))))))))) (PERIOD .))