yeah really no kidding
( ( yeah really ) ( no kidding ) )
(ROOT (SINV (VP (VBP yeah) (ADVP (RB really))) (NP (DT no) (NN kidding))))
Really? No kidding! 
( Really ( ? ( ( No kidding ) ! ) ) )
(ROOT (FRAG (NP (NNP Really)) (. ?) (NP (DT No) (NN kidding)) (. !)))