What does he do?
( What ( ( ( does he ) do ) ? ) )
(ROOT (SBARQ (WHNP (WP What)) (SQ (VBZ does) (NP (PRP he)) (VP (VB do))) (. ?)))
What is his occupation?
( What ( ( is ( his occupation ) ) ? ) )
(ROOT (SBARQ (WHNP (WP What)) (SQ (VBZ is) (NP (PRP$ his) (NN occupation))) (. ?)))