Now you're in, in what grade?
( Now ( you ( ( ( ( 're in ) , ) ( in ( what grade ) ) ) ? ) ) )
(ROOT (S (ADVP (RB Now)) (NP (PRP you)) (VP (VBP 're) (PP (IN in)) (, ,) (PP (IN in) (NP (WDT what) (NN grade)))) (. ?)))
In which grade are you now? I think you're in fourth grade.
( ( ( In ( which grade ) ) ( ( ( are you ) now ) ? ) ) ( I ( ( think ( you ( 're ( in ( fourth grade ) ) ) ) ) . ) ) )
(ROOT (S (SBARQ (WHPP (IN In) (WHNP (WDT which) (NN grade))) (SQ (VBP are) (NP (PRP you)) (NP (RB now))) (. ?)) (NP (PRP I)) (VP (VBP think) (SBAR (S (NP (PRP you)) (VP (VBP 're) (PP (IN in) (NP (JJ fourth) (NN grade))))))) (. .)))