What's your favorite toy?
( What ( ( 's ( your ( favorite toy ) ) ) ? ) )
(ROOT (SBARQ (WHNP (WP What)) (SQ (VBZ 's) (NP (PRP$ your) (JJ favorite) (NN toy))) (. ?)))
Who's your favorite superhero?
( Who ( ( 's ( your ( favorite superhero ) ) ) ? ) )
(ROOT (SBARQ (WHNP (WP Who)) (SQ (VBZ 's) (NP (PRP$ your) (JJ favorite) (NN superhero))) (. ?)))