(S (S (BASENP (DT This)) (VP (VBZ comes) (PP (BASENP (DT a) (NN month)) (PP (IN after) (NP (BASENP (DT an) (NN incident)) (SBAR (WHADVP (WRB where)) (S (BASENP (NN 7) (JJ Russian) (NNS sailors)) (VP (VP (VBD became) (ADJP (JJ trapped) (PP (IN in) (BASENP (DT a) (NN submarine))))) (CONJP (COMMA ,) (CC and)) (VP (VBD had) (S (VP (TO to) (VP (VB be) (VP (VBN rescued) (PP (IN with) (NP (BASENP (NN help)) (PP (IN from) (ADVP (RB abroad)))))))))))))))))) (PERIOD .))