(S (S (BASENP (NNP Royal) (NNP Mail) (NNS workers)) (VP (VBP have) (VP (VP (VBN voted) (ADVP (RB 3:1))) (PP (IN in) (NP (BASENP (NN favor)) (PP (IN of) (NP (BASENP (DT a) (JJ nationwide) (JJ postal) (NN strike)) (PP (IN in) (BASENP (DT the) (NNP United) (NNP Kingdom)))))))))) (PERIOD .))