Do you think that's what it was?
( ( ( Do you ) ( think ( that ( 's ( what ( it was ) ) ) ) ) ) ? )
(ROOT (SQ (VBP Do) (NP (PRP you)) (VP (VB think) (SBAR (IN that) (S (VP (VBZ 's) (SBAR (WHNP (WP what)) (S (NP (PRP it)) (VP (VBD was)))))))) (. ?)))
Is that what it was, you think?
( ( ( Is that ) ( what ( it ( ( was , ) ( you think ) ) ) ) ) ? )
(ROOT (SQ (VBZ Is) (NP (DT that)) (NP (NP (WP what)) (SBAR (S (NP (PRP it)) (VP (VBD was) (, ,) (SBAR (S (NP (PRP you)) (VP (VBP think)))))))) (. ?)))