(S (S (NP (BASENP (NNP Pacific) (NNP Voyager)) (CC and) (BASENP (NNP Tabua) (NNP Class))) (VP (VBP have) (VP (VBN been) (VP (VP (VBN replaced) (PP (IN with) (BASENP (NN economy) (CC and) (NN business) (NN class)))) (ADVP (RB respectively)))))) (PERIOD .))