no not it not no it's a it's not something
( ( no not ) ( it ( ( not ( no it ) ) ( 's ( a ( it ( ( 's not ) something ) ) ) ) ) ) )
(ROOT (FRAG (ADVP (RB no) (RB not)) (NP (NP (PRP it)) (SBAR (S (NP (RB not) (DT no) (PRP it)) (VP (VBZ 's) (NP (DT a) (S (NP (PRP it)) (VP (VBZ 's) (RB not) (NP (NN something)))))))))))
It's not something
( It ( ( 's not ) something ) )
(ROOT (S (NP (PRP It)) (VP (VBZ 's) (RB not) (NP (NN something)))))