far more demanding than it needs to be 
(ROOT (FRAG (ADJP (ADJP (RB far) (RBR more) (VBG demanding)) (SBAR (IN than) (S (NP (PRP it)) (VP (VBZ needs) (S (VP (TO to) (VP (VB be))))))))))
(ROOT (FRAG (ADJP (ADJP (RB ) (RBR ) (VBG )) (SBAR (IN ) (S (NP (PRP )) (VP (VBZ ) (S (VP (TO ) (VP (VB ))))))))))