um-hum what is your worst then
( um-hum ( what ( ( is ( your worst ) ) then ) ) )
(ROOT (FRAG (NP (NN um-hum)) (SBAR (WHNP (WP what)) (S (VP (VBZ is) (NP (PRP$ your) (JJS worst)) (ADVP (RB then)))))))
Then what is your worst?
( Then ( what ( ( is ( your worst ) ) ? ) ) )
(ROOT (SBARQ (ADVP (RB Then)) (WHNP (WP what)) (SQ (VP (VBZ is) (NP (PRP$ your) (JJS worst)))) (. ?)))