uh-huh yeah yeah they're good
( ( uh-huh yeah ) ( yeah ( they ( 're good ) ) ) )
(ROOT (S (NP (JJ uh-huh) (NN yeah)) (VP (VBP yeah) (SBAR (S (NP (PRP they)) (VP (VBP 're) (ADJP (JJ good))))))))
They were better before.
( They ( ( were ( better before ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBD were) (ADVP (RBR better) (IN before))) (. .)))