No, John, I said, "it isn't one of us. 
( ( No ( , John ) ) ( , ( I ( ( ( ( said , ) `` ) ( it ( ( is n't ) ( one ( of us ) ) ) ) ) . ) ) ) )
(ROOT (S (FRAG (INTJ (UH No)) (, ,) (NP (NNP John))) (, ,) (NP (PRP I)) (VP (VBD said) (, ,) (`` ``) (S (NP (PRP it)) (VP (VBZ is) (RB n't) (NP (NP (CD one)) (PP (IN of) (NP (PRP us))))))) (. .)))
John didn't know if they were one of us.
( John ( ( ( did n't ) ( know ( if ( they ( were ( one ( of us ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP John)) (VP (VBD did) (RB n't) (VP (VB know) (SBAR (IN if) (S (NP (PRP they)) (VP (VBD were) (NP (NP (CD one)) (PP (IN of) (NP (PRP us))))))))) (. .)))