's really unclear why this project was undertaken 
(ROOT (VP (VBZ 's) (ADJP (RB really) (JJ unclear)) (SBAR (WHADVP (WRB why)) (S (NP (DT this) (NN project)) (VP (VBD was) (VP (VBN undertaken)))))))
(ROOT (VP (VBZ ) (ADJP (RB ) (JJ )) (SBAR (WHADVP (WRB )) (S (NP (DT ) (NN )) (VP (VBD ) (VP (VBN )))))))