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