than anything that 's been done before 
(ROOT (PP (IN than) (NP (NP (NN anything)) (SBAR (WHNP (WDT that)) (S (VP (VBZ 's) (VP (VBN been) (VP (VBN done) (ADVP (RB before))))))))))
(ROOT (PP (IN ) (NP (NP (NN )) (SBAR (WHNP (WDT )) (S (VP (VBZ ) (VP (VBN ) (VP (VBN ) (ADVP (RB ))))))))))