that did n't sell many records but helped change a nation 
(ROOT (S (NP (DT that)) (VP (VP (VBD did) (RB n't) (VP (VB sell) (NP (JJ many) (NNS records)))) (CC but) (VP (VBD helped) (S (VP (VB change) (NP (DT a) (NN nation))))))))
(ROOT (S (NP (DT )) (VP (VP (VBD ) (RB ) (VP (VB ) (NP (JJ ) (NNS )))) (CC ) (VP (VBD ) (S (VP (VB ) (NP (DT ) (NN ))))))))