some kid who ca n't act , only 
(ROOT (NP (NP (DT some) (NN kid)) (SBAR (WHNP (WP who)) (S (VP (MD ca) (RB n't) (VP (VB act) (, ,) (ADVP (RB only))))))))
(ROOT (NP (NP (DT ) (NN )) (SBAR (WHNP (WP )) (S (VP (MD ) (RB ) (VP (VB ) (, ) (ADVP (RB ))))))))