it looks good , but it is essentially empty 
(ROOT (S (S (NP (PRP it)) (VP (VBZ looks) (ADJP (JJ good)))) (, ,) (CC but) (S (NP (PRP it)) (VP (VBZ is) (ADJP (RB essentially) (JJ empty))))))
(ROOT (S (S (NP (PRP )) (VP (VBZ ) (ADJP (JJ )))) (, ) (CC ) (S (NP (PRP )) (VP (VBZ ) (ADJP (RB ) (JJ ))))))