(S (S (S (BASENP (DT All) (UCP (NN rail) (CC and) (JJ underground)) (NNS stations)) (VP (VBP remain) (VP (VBN closed)))) (COMMA ,) (SBAR (IN although) (S (BASENP (NNS efforts)) (VP (VBP are) (VP (VBG being) (VP (VBN made) (S (VP (TO to) (VP (VB reopen) (BASENP (PRP them))))))))))) (PERIOD .))