How old would you say you were when your cousins were doing this reading?
( ( How old ) ( ( ( would you ) ( say ( you ( were ( when ( ( your cousins ) ( were ( doing ( this reading ) ) ) ) ) ) ) ) ) ? ) )
(ROOT (SBARQ (WHADJP (WRB How) (JJ old)) (SQ (MD would) (NP (PRP you)) (VP (VB say) (SBAR (S (NP (PRP you)) (VP (VBD were) (SBAR (WHADVP (WRB when)) (S (NP (PRP$ your) (NNS cousins)) (VP (VBD were) (VP (VBG doing) (NP (DT this) (NN reading))))))))))) (. ?)))
How old were you when you did this reading? 
( ( How old ) ( ( ( were you ) ( when ( you ( did ( this reading ) ) ) ) ) ? ) )
(ROOT (SBARQ (WHADJP (WRB How) (JJ old)) (SQ (VBD were) (NP (PRP you)) (SBAR (WHADVP (WRB when)) (S (NP (PRP you)) (VP (VBD did) (NP (DT this) (NN reading)))))) (. ?)))