definitive , if disingenuous , feature 
(ROOT (FRAG (ADJP (JJ definitive) (, ,) (SBAR (IN if) (FRAG (ADJP (JJ disingenuous)))) (, ,)) (NN feature)))
(ROOT (FRAG (ADJP (JJ ) (, ) (SBAR (IN ) (FRAG (ADJP (JJ )))) (, )) (NN )))