How old are you talking about?
( ( How old ) ( ( ( are you ) ( talking about ) ) ? ) )
(ROOT (SBARQ (WHADJP (WRB How) (JJ old)) (SQ (VBP are) (NP (PRP you)) (VP (VBG talking) (IN about))) (. ?)))
Where are you talking about?
( Where ( ( ( are you ) ( talking about ) ) ? ) )
(ROOT (SBARQ (WHADVP (WRB Where)) (SQ (VBP are) (NP (PRP you)) (VP (VBG talking) (IN about))) (. ?)))