(S (S (BASENP (NN 9) (NN service)) (VP (VBD was) (VP (VP (VBN started) (PP (IN on) (NP (BASENP (NNP December) (NN 12)) (COMMA ,) (NN 1988)))) (COMMA ,) (S (VP (PP (IN at) (BASENP (NN first))) (VP (VBG running) (PP (IN during) (NP (BASENP (NN rush) (NNS hours)) (CC and) (BASENP (NNP middays)))))))))) (PERIOD .))