(S (S (ADVP (RB However)) (COMMA ,) (S (BASENP (NNS locals)) (VP (VBP recognize) (SBAR (IN that) (S (BASENP (PRP they)) (VP (ADVP (RB too)) (VP (VBP contribute) (PP (TO to) (BASENP (DT the) (NN problem)))))))))) (PERIOD .))