it 's undone by a sloppy script 
(ROOT (S (NP (PRP it)) (VP (VBZ 's) (VP (VBN undone) (PP (IN by) (NP (DT a) (JJ sloppy) (NN script)))))))
(ROOT (S (NP (PRP )) (VP (VBZ ) (VP (VBN ) (PP (IN ) (NP (DT ) (JJ ) (NN )))))))