OK, how about you Mom?
( OK ( , ( ( how ( ( about you ) Mom ) ) ? ) ) )
(ROOT (FRAG (ADJP (JJ OK)) (, ,) (SBAR (WHADVP (WRB how)) (S (NP (RB about) (PRP you)) (VP (VBZ Mom)))) (. ?)))
Fine, mom, what about you?
( ( ( ( ( Fine , ) mom ) , ) ( what ( about you ) ) ) ? )
(ROOT (NP (NP (NNP Fine)) (, ,) (NP (NN mom)) (, ,) (NP (NP (WP what)) (PP (IN about) (NP (PRP you)))) (. ?)))