done , so primitive in technique , 
(ROOT (VP (VP (VBN done)) (, ,) (ADJP (RB so) (JJ primitive) (PP (IN in) (NP (NN technique)))) (, ,)))
(ROOT (VP (VP (VBN )) (, ) (ADJP (RB ) (JJ ) (PP (IN ) (NP (NN )))) (, )))