Does anyone know what happened to chaos?
( Does ( anyone ( ( know ( what ( happened ( to chaos ) ) ) ) ? ) ) )
(ROOT (SQ (NNP Does) (NP (NN anyone)) (VP (VB know) (SBAR (WHNP (WP what)) (S (VP (VBD happened) (PP (TO to) (NP (NN chaos))))))) (. ?)))
What happened to chaos?
( What ( ( happened ( to chaos ) ) ? ) )
(ROOT (SBARQ (WHNP (WP What)) (SQ (VP (VBD happened) (PP (TO to) (NP (NN chaos))))) (. ?)))