(S (S (PP (IN In) (BASENP (JJ recent) (NNS years))) (S (BASENP (NNP North) (NNP Korea)) (VP (VBD underwent) (NP (BASENP (JJ several) (JJ minor) (NNS reforms)) (SBAR (WHNP (WDT that)) (S (VP (VP (VBD did) (RB not)) (VP (VB appear) (S (VP (TO to) (VP (ADVP (RB significantly)) (VP (VB improve) (NP (BASENP (NN quality)) (PP (IN of) (BASENP (NN life)))))))))))))))) (PERIOD .))