I don't know all the answers, fella.
( I ( ( ( do n't ) ( know ( ( ( all ( the answers ) ) , ) fella ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP do) (RB n't) (VP (VB know) (NP (NP (PDT all) (DT the) (NNS answers)) (, ,) (NP (NN fella))))) (. .)))
I'm not sure about anything.
( I ( ( ( 'm not ) ( sure ( about anything ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP 'm) (RB not) (ADJP (JJ sure) (PP (IN about) (NP (NN anything))))) (. .)))