17 "Surely you are not thinking of refusing? 
( 17 ( `` ( Surely ( you ( ( ( are not ) ( thinking ( of refusing ) ) ) ? ) ) ) ) )
(ROOT (S (NP (CD 17)) (`` ``) (ADVP (RB Surely)) (NP (PRP you)) (VP (VBP are) (RB not) (VP (VBG thinking) (PP (IN of) (S (VP (VBG refusing)))))) (. ?)))
You can't be thinking of turning it down?
( You ( ( ( ca n't ) ( be ( thinking ( of ( ( turning it ) down ) ) ) ) ) ? ) )
(ROOT (S (NP (PRP You)) (VP (MD ca) (RB n't) (VP (VB be) (VP (VBG thinking) (PP (IN of) (S (VP (VBG turning) (NP (PRP it)) (PRT (RP down)))))))) (. ?)))